#region Insert DealerVisit
[WebMethod]
public XmlDocument SaveDataMethod(string xml)
{
try
{
objExceptionLog.LogMessage("Confirm if method called", "SaveDataMethod");
int UserID = 0;
DateTime VisitDate = DateTime.Now;
int DealerID = 0;
string Remarks = "";
decimal Collection = 0;
string ChequeDDNo = "";
DateTime ChequeDDDate = DateTime.Now;
DataSet ds = new DataSet();
ds = Decode(xml);
foreach (DataRow dr in ds.Tables[0].Rows)
{
UserID = Convert.ToInt32(dr["UserID"]);
VisitDate = Convert.ToDateTime(dr["VisitDate"]);
DealerID = Convert.ToInt32(dr["DealerID"]);
Remarks = Convert.ToString(dr["Remarks"]);
Collection = Convert.ToDecimal(dr["Collection"]);
ChequeDDNo = Convert.ToString(dr["ChequeDDNo"]);
ChequeDDDate = Convert.ToDateTime(dr["ChequeDDDate"]);
string strresult = "";
BusinessDealerVisit objBusiness = new BusinessDealerVisit();
strresult = objBusiness.Save(new EntityDealerVisit
{
DealerVisitUserID = UserID,
Date = VisitDate,
VisitedDealerID = DealerID,
Remarks = Remarks,
Collection = Collection,
ChequeDDNo = ChequeDDNo,
ChequeDDDate = ChequeDDDate
});
//Console.WriteLine(dr["ColName"].ToString());
}
//List<string> MyCollection = new List<string>();
//XElement xmlTree = XElement.Parse(xml);
//foreach (XElement e1 in xmlTree.Elements())
//{
// string values = e1.Value;
// MyCollection.Add(values);
//}
//MyCollection.ToArray();
//UserID = Convert.ToInt32(MyCollection[0]);
//VisitDate = Convert.ToDateTime(MyCollection[1]);
//DealerID = Convert.ToInt32(MyCollection[2]);
//Remarks = Convert.ToString(MyCollection[3]);
//Collection = Convert.ToDecimal(MyCollection[4]);
//ChequeDDNo = Convert.ToString(MyCollection[5]);
//ChequeDDDate = Convert.ToDateTime(MyCollection[6]);
//string strresult = "";
//BusinessData objBusiness = new BusinessData ();
try
{
// strresult = objBusiness.Save(new EntityData
// {
// DealerVisitUserID = UserID,
// Date = VisitDate,
// VisitedDealerID = DealerID,
// Remarks = Remarks,
// Collection = Collection,
// ChequeDDNo = ChequeDDNo,
// ChequeDDDate = ChequeDDDate
// });
Document = CreateBaseStringBuilder();
Document.AppendLine("<SaveData>");
Document.AppendLine("<Message>" + "Data Saved sucessfully" + "</Message>");
Document.AppendLine("</SaveData>");
XMLDocument.LoadXml(Document.ToString());
objExceptionLog.LogMessage("Confirmation SaveData Saved sucessfully", "InsertDealerVisit");
return (XMLDocument);
//}
}
catch (Exception ex)
{
Document = CreateBaseStringBuilder();
Document.AppendLine("<SaveData>");
Document.AppendLine("<Message>" + "Error Saving Record" + "</Message>");
Document.AppendLine("</SaveData>");
XMLDocument.LoadXml(Document.ToString());
objExceptionLog.LogMessage("Error Saving Record", "SaveDataMethod");
return (XMLDocument);
}
}
catch (Exception ex)
{
objExceptionLog.LogErrorMessage(ex, "SaveDataMethod");
return null;
}
}
#endregion
//add in business logic project
public string Save(EntityData enPlaceOrder)
{
string strResult = "";
using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ConnectionString))
{
cn.Open();
SqlCommand cmd;
try
{
cmd = new SqlCommand("usp_SaveExampleData", cn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandTimeout = 0;
cmd.Parameters.Clear();
// cmd.Parameters.AddWithValue("@OrderNo", enPlaceOrder.ProductID);
cmd.Parameters.AddWithValue("@UserID", Convert.ToInt32(enPlaceOrder.DealerVisitUserID));
cmd.Parameters.AddWithValue("@VisitDate", Convert.ToDateTime(enPlaceOrder.Date));
cmd.Parameters.AddWithValue("@DealerID", enPlaceOrder.VisitedDealerID);
cmd.Parameters.AddWithValue("@Remarks", enPlaceOrder.Remarks);
cmd.Parameters.AddWithValue("@Collection", enPlaceOrder.Collection);
cmd.Parameters.AddWithValue("@ChequeDDNo", enPlaceOrder.ChequeDDNo);
cmd.Parameters.AddWithValue("@ChequeDDDate", enPlaceOrder.ChequeDDDate);
SqlParameter paramRemarks = new SqlParameter("@strresult", SqlDbType.VarChar, 1);
paramRemarks.Direction = ParameterDirection.Output;
cmd.Parameters.Add(paramRemarks);
cmd.ExecuteNonQuery();
strResult = Convert.ToString(paramRemarks.Value);
cn.Close();
//Close and dispose objects.
cmd.Dispose();
return strResult;
}
catch (Exception ex)
{
throw ex;
}
}
}
//add below in entity class library project
public class EntityDealerVisit
{
public string UserID { get; set; }
public string VisitDate { get; set; }
public string DealerID { get; set; }
public string DCollection { get; set; }
public string DChequeDDDate { get; set; }
public int DealerVisitUserID { get; set; }
public DateTime Date { get; set; }
public int VisitedDealerID { get; set; }
public string Remarks{get;set;}
public decimal Collection{get; set;}
public string ChequeDDNo{get;set;}
public DateTime ChequeDDDate{get;set;}
}
//Dataaccess library project consists of to class file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Data.Common;
using System.Configuration;
//using Entities.Masters;
using Microsoft.ApplicationBlocks.Data;
namespace DataAccess
{
public class DataAccessCommon
{
public static DataSet GetData(string DAL_usp_Name)
{
string connectionStr = GetConnString();
try
{
return SqlHelper.ExecuteDataset(connectionStr, CommandType.StoredProcedure, DAL_usp_Name);
}
catch (SqlException sqlex)
{
throw new ArgumentException(sqlex.Message);
}
catch (Exception ex)
{
throw new ArgumentException(ex.Message);
}
}
private static string GetConnString()
{
return ConfigurationManager.ConnectionStrings["Default"].ConnectionString;
}
public static object SaveData(string DAL_usp_Name, SqlParameter[] objDALParam, char DAL_ExecutionType)
{
DAL_ExecutionType = 'N';
string connectionStr = GetConnString();
try
{
if (DAL_ExecutionType == 'S')
{
return SqlHelper.ExecuteScalar(connectionStr, CommandType.StoredProcedure, DAL_usp_Name, objDALParam);
}
else
{
return SqlHelper.ExecuteNonQuery(connectionStr, CommandType.StoredProcedure, DAL_usp_Name, objDALParam);
}
}
catch (SqlException sqlex)
{
throw new ArgumentException(sqlex.Message);
}
catch (Exception ex)
{
throw new ArgumentException(ex.Message);
}
}
}
}
and
//===============================================================================
// Microsoft Data Access Application Block for .NET
// http://msdn.microsoft.com/library/en-us/dnbda/html/daab-rm.asp
//
// SQLHelper.cs
//
// This file contains the implementations of the SqlHelper and SqlHelperParameterCache
// classes.
//
// For more information see the Data Access Application Block Implementation Overview.
//
//===============================================================================
// Copyright (C) 2000-2001 Microsoft Corporation
// All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR
// FITNESS FOR A PARTICULAR PURPOSE.
//==============================================================================
using System;
using System.Data;
using System.Xml;
using System.Data.SqlClient;
using System.Collections;
namespace Microsoft.ApplicationBlocks.Data
{
/// <summary>
/// The SqlHelper class is intended to encapsulate high performance, scalable best practices for
/// common uses of SqlClient.
/// </summary>
public sealed class SqlHelper
{
#region private utility methods & constructors
//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelper()".
/// <summary>
/// This method is used to attach array of SqlParameters to a SqlCommand.
///
/// This method will assign a value of DbNull to any parameter with a direction of
/// InputOutput and a value of null.
///
/// This behavior will prevent default values from being used, but
/// this will be the less common case than an intended pure output parameter (derived as InputOutput)
/// where the user provided no input value.
/// </summary>
/// <param name="command">The command to which the parameters will be added</param>
/// <param name="commandParameters">an array of SqlParameters tho be added to command</param>
private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
{
foreach (SqlParameter p in commandParameters)
{
//check for derived output value with no value assigned
if (p != null)
{
if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))
{
p.Value = DBNull.Value;
}
command.Parameters.Add(p);
}
}
}
/// <summary>
/// This method assigns an array of values to an array of SqlParameters.
/// </summary>
/// <param name="commandParameters">array of SqlParameters to be assigned values</param>
/// <param name="parameterValues">array of objects holding the values to be assigned</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
{
if ((commandParameters == null) || (parameterValues == null))
{
//do nothing if we get no data
return;
}
// we must have the same number of values as we pave parameters to put them in
if (commandParameters.Length != parameterValues.Length)
{
throw new ArgumentException("Parameter count does not match Parameter Value count.");
}
//iterate through the SqlParameters, assigning the values from the corresponding position in the
//value array
for (int i = 0, j = commandParameters.Length; i < j; i++)
{
commandParameters[i].Value = parameterValues[i];
}
}
/// <summary>
/// This method opens (if necessary) and assigns a connection, transaction, command type and parameters
/// to the provided command.
/// </summary>
/// <param name="command">the SqlCommand to be prepared</param>
/// <param name="connection">a valid SqlConnection, on which to execute this command</param>
/// <param name="transaction">a valid SqlTransaction, or 'null'</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParameters to be associated with the command or 'null' if no parameters are required</param>
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters)
{
//if the provided connection is not open, we will open it
if (connection.State != ConnectionState.Open)
{
connection.Open();
}
//associate the connection with the command
command.Connection = connection;
//set the command text (stored procedure name or SQL statement)
command.CommandText = commandText;
//if we were provided a transaction, assign it.
if (transaction != null)
{
command.Transaction = transaction;
}
//set the command type
command.CommandType = commandType;
//attach the command parameters if they are provided
if (commandParameters != null)
{
AttachParameters(command, commandParameters);
}
return;
}
#endregion private utility methods & constructors
#region ExecuteNonQuery
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteNonQuery(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored prcedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//finally, execute the command.
int retval = cmd.ExecuteNonQuery();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//finally, execute the command.
int retval = cmd.ExecuteNonQuery();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteNonQuery
#region ExecuteDataSet
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteDataset(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the DataSet using default values for DataTable names, etc.
da.Fill(ds);
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
//return the dataset
return ds;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the DataSet using default values for DataTable names, etc.
da.Fill(ds);
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
//return the dataset
return ds;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteDataSet
#region ExecuteReader
/// <summary>
/// this enum is used to indicate whether the connection was provided by the caller, or created by SqlHelper, so that
/// we can set the appropriate CommandBehavior when calling ExecuteReader()
/// </summary>
private enum SqlConnectionOwnership
{
/// <summary>Connection is owned and managed by SqlHelper</summary>
Internal,
/// <summary>Connection is owned and managed by the caller</summary>
External
}
/// <summary>
/// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
/// </summary>
/// <remarks>
/// If we created and opened the connection, we want the connection to be closed when the DataReader is closed.
///
/// If the caller provided the connection, we want to leave it to them to manage.
/// </remarks>
/// <param name="connection">a valid SqlConnection, on which to execute this command</param>
/// <param name="transaction">a valid SqlTransaction, or 'null'</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParameters to be associated with the command or 'null' if no parameters are required</param>
/// <param name="connectionOwnership">indicates whether the connection parameter was provided by the caller, or created by SqlHelper</param>
/// <returns>SqlDataReader containing the results of the command</returns>
private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters);
//create a reader
SqlDataReader dr;
// call ExecuteReader with the appropriate CommandBehavior
if (connectionOwnership == SqlConnectionOwnership.External)
{
dr = cmd.ExecuteReader();
}
else
{
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return dr;
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection
SqlConnection cn = new SqlConnection(connectionString);
cn.Open();
try
{
//call the private overload that takes an internally owned connection in place of the connection string
return ExecuteReader(cn, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
}
catch
{
//if we fail to return the SqlDatReader, we need to close the connection ourselves
cn.Close();
throw;
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//pass through the call to the private overload using a null transaction value and an externally owned connection
return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//string str_conn = ConfigurationManager.ConnectionStrings[str_Conn_Name].ConnectionString;
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//pass through to private overload, indicating that the connection is owned by the caller
return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteReader
#region ExecuteScalar
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteScalar(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//execute the command & return the results
object retval = cmd.ExecuteScalar();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//execute the command & return the results
object retval = cmd.ExecuteScalar();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteScalar
#region ExecuteXmlReader
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure using "FOR XML AUTO"</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteXmlReader
public static SqlParameter AddParameterstoCommand(String parameterName, Object Value, SqlDbType DbType, ParameterDirection Direction)
{
SqlParameter param;
param = new SqlParameter(parameterName, DbType);
param.Direction = Direction;
if (!(Direction == ParameterDirection.Output))
{
param.Value = Value;
}
return param;
}
}
/// <summary>
/// SqlHelperParameterCache provides functions to leverage a static cache of procedure parameters, and the
/// ability to discover parameters for stored procedures at run-time.
/// </summary>
public sealed class SqlHelperParameterCache
{
#region private methods, variables, and constructors
//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelperParameterCache()".
private SqlHelperParameterCache() { }
private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
/// <summary>
/// resolve at run time the appropriate set of SqlParameters for a stored procedure
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="includeReturnValueParameter">whether or not to include their return value parameter</param>
/// <returns></returns>
private static SqlParameter[] DiscoverSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
{
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(spName, cn))
{
cn.Open();
cmd.CommandType = CommandType.StoredProcedure;
SqlCommandBuilder.DeriveParameters(cmd);
if (!includeReturnValueParameter)
{
cmd.Parameters.RemoveAt(0);
}
SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count]; ;
cmd.Parameters.CopyTo(discoveredParameters, 0);
return discoveredParameters;
}
}
//deep copy of cached SqlParameter array
private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters)
{
SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];
for (int i = 0, j = originalParameters.Length; i < j; i++)
{
clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone();
}
return clonedParameters;
}
#endregion private methods, variables, and constructors
#region caching functions
/// <summary>
/// add parameter array to the cache
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters to be cached</param>
public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
{
string hashKey = connectionString + ":" + commandText;
paramCache[hashKey] = commandParameters;
}
/// <summary>
/// retrieve a parameter array from the cache
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an array of SqlParamters</returns>
public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
{
string hashKey = connectionString + ":" + commandText;
SqlParameter[] cachedParameters = (SqlParameter[])paramCache[hashKey];
if (cachedParameters == null)
{
return null;
}
else
{
return CloneParameters(cachedParameters);
}
}
#endregion caching functions
#region Parameter Discovery Functions
/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure
/// </summary>
/// <remarks>
/// This method will query the database for this information, and then store it in a cache for future requests.
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <returns>an array of SqlParameters</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
{
return GetSpParameterSet(connectionString, spName, false);
}
/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure
/// </summary>
/// <remarks>
/// This method will query the database for this information, and then store it in a cache for future requests.
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="includeReturnValueParameter">a bool value indicating whether the return value parameter should be included in the results</param>
/// <returns>an array of SqlParameters</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
{
string hashKey = connectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
SqlParameter[] cachedParameters;
cachedParameters = (SqlParameter[])paramCache[hashKey];
if (cachedParameters == null)
{
cachedParameters = (SqlParameter[])(paramCache[hashKey] = DiscoverSpParameterSet(connectionString, spName, includeReturnValueParameter));
}
return CloneParameters(cachedParameters);
}
#endregion Parameter Discovery Functions
}
}
[WebMethod]
public XmlDocument SaveDataMethod(string xml)
{
try
{
objExceptionLog.LogMessage("Confirm if method called", "SaveDataMethod");
int UserID = 0;
DateTime VisitDate = DateTime.Now;
int DealerID = 0;
string Remarks = "";
decimal Collection = 0;
string ChequeDDNo = "";
DateTime ChequeDDDate = DateTime.Now;
DataSet ds = new DataSet();
ds = Decode(xml);
foreach (DataRow dr in ds.Tables[0].Rows)
{
UserID = Convert.ToInt32(dr["UserID"]);
VisitDate = Convert.ToDateTime(dr["VisitDate"]);
DealerID = Convert.ToInt32(dr["DealerID"]);
Remarks = Convert.ToString(dr["Remarks"]);
Collection = Convert.ToDecimal(dr["Collection"]);
ChequeDDNo = Convert.ToString(dr["ChequeDDNo"]);
ChequeDDDate = Convert.ToDateTime(dr["ChequeDDDate"]);
string strresult = "";
BusinessDealerVisit objBusiness = new BusinessDealerVisit();
strresult = objBusiness.Save(new EntityDealerVisit
{
DealerVisitUserID = UserID,
Date = VisitDate,
VisitedDealerID = DealerID,
Remarks = Remarks,
Collection = Collection,
ChequeDDNo = ChequeDDNo,
ChequeDDDate = ChequeDDDate
});
//Console.WriteLine(dr["ColName"].ToString());
}
//List<string> MyCollection = new List<string>();
//XElement xmlTree = XElement.Parse(xml);
//foreach (XElement e1 in xmlTree.Elements())
//{
// string values = e1.Value;
// MyCollection.Add(values);
//}
//MyCollection.ToArray();
//UserID = Convert.ToInt32(MyCollection[0]);
//VisitDate = Convert.ToDateTime(MyCollection[1]);
//DealerID = Convert.ToInt32(MyCollection[2]);
//Remarks = Convert.ToString(MyCollection[3]);
//Collection = Convert.ToDecimal(MyCollection[4]);
//ChequeDDNo = Convert.ToString(MyCollection[5]);
//ChequeDDDate = Convert.ToDateTime(MyCollection[6]);
//string strresult = "";
//BusinessData objBusiness = new BusinessData ();
try
{
// strresult = objBusiness.Save(new EntityData
// {
// DealerVisitUserID = UserID,
// Date = VisitDate,
// VisitedDealerID = DealerID,
// Remarks = Remarks,
// Collection = Collection,
// ChequeDDNo = ChequeDDNo,
// ChequeDDDate = ChequeDDDate
// });
Document = CreateBaseStringBuilder();
Document.AppendLine("<SaveData>");
Document.AppendLine("<Message>" + "Data Saved sucessfully" + "</Message>");
Document.AppendLine("</SaveData>");
XMLDocument.LoadXml(Document.ToString());
objExceptionLog.LogMessage("Confirmation SaveData Saved sucessfully", "InsertDealerVisit");
return (XMLDocument);
//}
}
catch (Exception ex)
{
Document = CreateBaseStringBuilder();
Document.AppendLine("<SaveData>");
Document.AppendLine("<Message>" + "Error Saving Record" + "</Message>");
Document.AppendLine("</SaveData>");
XMLDocument.LoadXml(Document.ToString());
objExceptionLog.LogMessage("Error Saving Record", "SaveDataMethod");
return (XMLDocument);
}
}
catch (Exception ex)
{
objExceptionLog.LogErrorMessage(ex, "SaveDataMethod");
return null;
}
}
#endregion
//add in business logic project
public string Save(EntityData enPlaceOrder)
{
string strResult = "";
using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ConnectionString))
{
cn.Open();
SqlCommand cmd;
try
{
cmd = new SqlCommand("usp_SaveExampleData", cn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandTimeout = 0;
cmd.Parameters.Clear();
// cmd.Parameters.AddWithValue("@OrderNo", enPlaceOrder.ProductID);
cmd.Parameters.AddWithValue("@UserID", Convert.ToInt32(enPlaceOrder.DealerVisitUserID));
cmd.Parameters.AddWithValue("@VisitDate", Convert.ToDateTime(enPlaceOrder.Date));
cmd.Parameters.AddWithValue("@DealerID", enPlaceOrder.VisitedDealerID);
cmd.Parameters.AddWithValue("@Remarks", enPlaceOrder.Remarks);
cmd.Parameters.AddWithValue("@Collection", enPlaceOrder.Collection);
cmd.Parameters.AddWithValue("@ChequeDDNo", enPlaceOrder.ChequeDDNo);
cmd.Parameters.AddWithValue("@ChequeDDDate", enPlaceOrder.ChequeDDDate);
SqlParameter paramRemarks = new SqlParameter("@strresult", SqlDbType.VarChar, 1);
paramRemarks.Direction = ParameterDirection.Output;
cmd.Parameters.Add(paramRemarks);
cmd.ExecuteNonQuery();
strResult = Convert.ToString(paramRemarks.Value);
cn.Close();
//Close and dispose objects.
cmd.Dispose();
return strResult;
}
catch (Exception ex)
{
throw ex;
}
}
}
//add below in entity class library project
public class EntityDealerVisit
{
public string UserID { get; set; }
public string VisitDate { get; set; }
public string DealerID { get; set; }
public string DCollection { get; set; }
public string DChequeDDDate { get; set; }
public int DealerVisitUserID { get; set; }
public DateTime Date { get; set; }
public int VisitedDealerID { get; set; }
public string Remarks{get;set;}
public decimal Collection{get; set;}
public string ChequeDDNo{get;set;}
public DateTime ChequeDDDate{get;set;}
}
//Dataaccess library project consists of to class file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Data.Common;
using System.Configuration;
//using Entities.Masters;
using Microsoft.ApplicationBlocks.Data;
namespace DataAccess
{
public class DataAccessCommon
{
public static DataSet GetData(string DAL_usp_Name)
{
string connectionStr = GetConnString();
try
{
return SqlHelper.ExecuteDataset(connectionStr, CommandType.StoredProcedure, DAL_usp_Name);
}
catch (SqlException sqlex)
{
throw new ArgumentException(sqlex.Message);
}
catch (Exception ex)
{
throw new ArgumentException(ex.Message);
}
}
private static string GetConnString()
{
return ConfigurationManager.ConnectionStrings["Default"].ConnectionString;
}
public static object SaveData(string DAL_usp_Name, SqlParameter[] objDALParam, char DAL_ExecutionType)
{
DAL_ExecutionType = 'N';
string connectionStr = GetConnString();
try
{
if (DAL_ExecutionType == 'S')
{
return SqlHelper.ExecuteScalar(connectionStr, CommandType.StoredProcedure, DAL_usp_Name, objDALParam);
}
else
{
return SqlHelper.ExecuteNonQuery(connectionStr, CommandType.StoredProcedure, DAL_usp_Name, objDALParam);
}
}
catch (SqlException sqlex)
{
throw new ArgumentException(sqlex.Message);
}
catch (Exception ex)
{
throw new ArgumentException(ex.Message);
}
}
}
}
and
//===============================================================================
// Microsoft Data Access Application Block for .NET
// http://msdn.microsoft.com/library/en-us/dnbda/html/daab-rm.asp
//
// SQLHelper.cs
//
// This file contains the implementations of the SqlHelper and SqlHelperParameterCache
// classes.
//
// For more information see the Data Access Application Block Implementation Overview.
//
//===============================================================================
// Copyright (C) 2000-2001 Microsoft Corporation
// All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR
// FITNESS FOR A PARTICULAR PURPOSE.
//==============================================================================
using System;
using System.Data;
using System.Xml;
using System.Data.SqlClient;
using System.Collections;
namespace Microsoft.ApplicationBlocks.Data
{
/// <summary>
/// The SqlHelper class is intended to encapsulate high performance, scalable best practices for
/// common uses of SqlClient.
/// </summary>
public sealed class SqlHelper
{
#region private utility methods & constructors
//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelper()".
/// <summary>
/// This method is used to attach array of SqlParameters to a SqlCommand.
///
/// This method will assign a value of DbNull to any parameter with a direction of
/// InputOutput and a value of null.
///
/// This behavior will prevent default values from being used, but
/// this will be the less common case than an intended pure output parameter (derived as InputOutput)
/// where the user provided no input value.
/// </summary>
/// <param name="command">The command to which the parameters will be added</param>
/// <param name="commandParameters">an array of SqlParameters tho be added to command</param>
private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
{
foreach (SqlParameter p in commandParameters)
{
//check for derived output value with no value assigned
if (p != null)
{
if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))
{
p.Value = DBNull.Value;
}
command.Parameters.Add(p);
}
}
}
/// <summary>
/// This method assigns an array of values to an array of SqlParameters.
/// </summary>
/// <param name="commandParameters">array of SqlParameters to be assigned values</param>
/// <param name="parameterValues">array of objects holding the values to be assigned</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
{
if ((commandParameters == null) || (parameterValues == null))
{
//do nothing if we get no data
return;
}
// we must have the same number of values as we pave parameters to put them in
if (commandParameters.Length != parameterValues.Length)
{
throw new ArgumentException("Parameter count does not match Parameter Value count.");
}
//iterate through the SqlParameters, assigning the values from the corresponding position in the
//value array
for (int i = 0, j = commandParameters.Length; i < j; i++)
{
commandParameters[i].Value = parameterValues[i];
}
}
/// <summary>
/// This method opens (if necessary) and assigns a connection, transaction, command type and parameters
/// to the provided command.
/// </summary>
/// <param name="command">the SqlCommand to be prepared</param>
/// <param name="connection">a valid SqlConnection, on which to execute this command</param>
/// <param name="transaction">a valid SqlTransaction, or 'null'</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParameters to be associated with the command or 'null' if no parameters are required</param>
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters)
{
//if the provided connection is not open, we will open it
if (connection.State != ConnectionState.Open)
{
connection.Open();
}
//associate the connection with the command
command.Connection = connection;
//set the command text (stored procedure name or SQL statement)
command.CommandText = commandText;
//if we were provided a transaction, assign it.
if (transaction != null)
{
command.Transaction = transaction;
}
//set the command type
command.CommandType = commandType;
//attach the command parameters if they are provided
if (commandParameters != null)
{
AttachParameters(command, commandParameters);
}
return;
}
#endregion private utility methods & constructors
#region ExecuteNonQuery
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteNonQuery(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored prcedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//finally, execute the command.
int retval = cmd.ExecuteNonQuery();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//finally, execute the command.
int retval = cmd.ExecuteNonQuery();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an int representing the number of rows affected by the command</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteNonQuery
#region ExecuteDataSet
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteDataset(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the DataSet using default values for DataTable names, etc.
da.Fill(ds);
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
//return the dataset
return ds;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//fill the DataSet using default values for DataTable names, etc.
da.Fill(ds);
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
//return the dataset
return ds;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteDataSet
#region ExecuteReader
/// <summary>
/// this enum is used to indicate whether the connection was provided by the caller, or created by SqlHelper, so that
/// we can set the appropriate CommandBehavior when calling ExecuteReader()
/// </summary>
private enum SqlConnectionOwnership
{
/// <summary>Connection is owned and managed by SqlHelper</summary>
Internal,
/// <summary>Connection is owned and managed by the caller</summary>
External
}
/// <summary>
/// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
/// </summary>
/// <remarks>
/// If we created and opened the connection, we want the connection to be closed when the DataReader is closed.
///
/// If the caller provided the connection, we want to leave it to them to manage.
/// </remarks>
/// <param name="connection">a valid SqlConnection, on which to execute this command</param>
/// <param name="transaction">a valid SqlTransaction, or 'null'</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParameters to be associated with the command or 'null' if no parameters are required</param>
/// <param name="connectionOwnership">indicates whether the connection parameter was provided by the caller, or created by SqlHelper</param>
/// <returns>SqlDataReader containing the results of the command</returns>
private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters);
//create a reader
SqlDataReader dr;
// call ExecuteReader with the appropriate CommandBehavior
if (connectionOwnership == SqlConnectionOwnership.External)
{
dr = cmd.ExecuteReader();
}
else
{
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return dr;
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection
SqlConnection cn = new SqlConnection(connectionString);
cn.Open();
try
{
//call the private overload that takes an internally owned connection in place of the connection string
return ExecuteReader(cn, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
}
catch
{
//if we fail to return the SqlDatReader, we need to close the connection ourselves
cn.Close();
throw;
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//pass through the call to the private overload using a null transaction value and an externally owned connection
return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//string str_conn = ConfigurationManager.ConnectionStrings[str_Conn_Name].ConnectionString;
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//pass through to private overload, indicating that the connection is owned by the caller
return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a SqlDataReader containing the resultset generated by the command</returns>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteReader
#region ExecuteScalar
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in
/// the connection string.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the database specified in the connection string
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create & open a SqlConnection, and dispose of it after we are done.
using (SqlConnection cn = new SqlConnection(connectionString))
{
cn.Open();
//call the overload that takes a connection in place of the connection string
return ExecuteScalar(cn, commandType, commandText, commandParameters);
}
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in
/// the connection string using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//execute the command & return the results
object retval = cmd.ExecuteScalar();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//execute the command & return the results
object retval = cmd.ExecuteScalar();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteScalar
#region ExecuteXmlReader
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection
/// using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36);
/// </remarks>
/// <param name="connection">a valid SqlConnection</param>
/// <param name="spName">the name of the stored procedure using "FOR XML AUTO"</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
}
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders");
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
{
//pass through the call providing null for the set of SqlParameters
return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
}
/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction
/// using the provided parameters.
/// </summary>
/// <remarks>
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
/// <param name="commandText">the stored procedure name or T-SQL command using "FOR XML AUTO"</param>
/// <param name="commandParameters">an array of SqlParamters used to execute the command</param>
/// <returns>an XmlReader containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
{
//create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);
//create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();
// detach the SqlParameters from the command object, so they can be used again.
cmd.Parameters.Clear();
return retval;
}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified
/// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the
/// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
/// </summary>
/// <remarks>
/// This method provides no access to output parameters or the stored procedure's return value parameter.
///
/// e.g.:
/// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36);
/// </remarks>
/// <param name="transaction">a valid SqlTransaction</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
/// <returns>a dataset containing the resultset generated by the command</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
{
//if we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0))
{
//pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);
//assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);
//call the overload that takes an array of SqlParameters
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
}
//otherwise we can just call the SP without params
else
{
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
}
}
#endregion ExecuteXmlReader
public static SqlParameter AddParameterstoCommand(String parameterName, Object Value, SqlDbType DbType, ParameterDirection Direction)
{
SqlParameter param;
param = new SqlParameter(parameterName, DbType);
param.Direction = Direction;
if (!(Direction == ParameterDirection.Output))
{
param.Value = Value;
}
return param;
}
}
/// <summary>
/// SqlHelperParameterCache provides functions to leverage a static cache of procedure parameters, and the
/// ability to discover parameters for stored procedures at run-time.
/// </summary>
public sealed class SqlHelperParameterCache
{
#region private methods, variables, and constructors
//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelperParameterCache()".
private SqlHelperParameterCache() { }
private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
/// <summary>
/// resolve at run time the appropriate set of SqlParameters for a stored procedure
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="includeReturnValueParameter">whether or not to include their return value parameter</param>
/// <returns></returns>
private static SqlParameter[] DiscoverSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
{
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(spName, cn))
{
cn.Open();
cmd.CommandType = CommandType.StoredProcedure;
SqlCommandBuilder.DeriveParameters(cmd);
if (!includeReturnValueParameter)
{
cmd.Parameters.RemoveAt(0);
}
SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count]; ;
cmd.Parameters.CopyTo(discoveredParameters, 0);
return discoveredParameters;
}
}
//deep copy of cached SqlParameter array
private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters)
{
SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];
for (int i = 0, j = originalParameters.Length; i < j; i++)
{
clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone();
}
return clonedParameters;
}
#endregion private methods, variables, and constructors
#region caching functions
/// <summary>
/// add parameter array to the cache
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <param name="commandParameters">an array of SqlParamters to be cached</param>
public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
{
string hashKey = connectionString + ":" + commandText;
paramCache[hashKey] = commandParameters;
}
/// <summary>
/// retrieve a parameter array from the cache
/// </summary>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="commandText">the stored procedure name or T-SQL command</param>
/// <returns>an array of SqlParamters</returns>
public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
{
string hashKey = connectionString + ":" + commandText;
SqlParameter[] cachedParameters = (SqlParameter[])paramCache[hashKey];
if (cachedParameters == null)
{
return null;
}
else
{
return CloneParameters(cachedParameters);
}
}
#endregion caching functions
#region Parameter Discovery Functions
/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure
/// </summary>
/// <remarks>
/// This method will query the database for this information, and then store it in a cache for future requests.
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <returns>an array of SqlParameters</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
{
return GetSpParameterSet(connectionString, spName, false);
}
/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure
/// </summary>
/// <remarks>
/// This method will query the database for this information, and then store it in a cache for future requests.
/// </remarks>
/// <param name="connectionString">a valid connection string for a SqlConnection</param>
/// <param name="spName">the name of the stored procedure</param>
/// <param name="includeReturnValueParameter">a bool value indicating whether the return value parameter should be included in the results</param>
/// <returns>an array of SqlParameters</returns>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
{
string hashKey = connectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
SqlParameter[] cachedParameters;
cachedParameters = (SqlParameter[])paramCache[hashKey];
if (cachedParameters == null)
{
cachedParameters = (SqlParameter[])(paramCache[hashKey] = DiscoverSpParameterSet(connectionString, spName, includeReturnValueParameter));
}
return CloneParameters(cachedParameters);
}
#endregion Parameter Discovery Functions
}
}
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