Asp.net aspx page:-
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<style type="text/css">
body
{
font-family: Arial;
font-size: 10pt;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td style="width: 80px">
To:
</td>
<td>
<asp:TextBox ID="txtTo" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Subject:
</td>
<td>
<asp:TextBox ID="txtSubject" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td valign = "top">
Body:
</td>
<td>
<asp:TextBox ID="txtBody" runat="server" TextMode = "MultiLine" Height = "150" Width = "200"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
File Attachment:
</td>
<td>
<asp:FileUpload ID="fuAttachment" runat="server" />
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Gmail Email:
</td>
<td>
<asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Gmail Password:
</td>
<td>
<asp:TextBox ID="txtPassword" runat="server" TextMode = "Password"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:Button ID="Button1" Text="Send" OnClick="SendEmail" runat="server" />
</td>
</tr>
</table>
</form>
</body>
</html>
Asp.net aspx.cs page:-
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Net;
using System.Net.Mail;
public partial class _Default : System.Web.UI.Page
{
protected void SendEmail(object sender, EventArgs e)
{
string to = txtTo.Text;
string from = txtEmail.Text;
string subject = txtSubject.Text;
string body = txtBody.Text;
using (MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text))
{
mm.Subject = txtSubject.Text;
mm.Body = txtBody.Text;
if (fuAttachment.HasFile)
{
string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
}
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mm);
ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email sent.');", true);
}
}
}
Note :-Sometimes google setting require us to configure
use below link to configure: -
https://www.google.com/settings/security/lesssecureapps
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<style type="text/css">
body
{
font-family: Arial;
font-size: 10pt;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td style="width: 80px">
To:
</td>
<td>
<asp:TextBox ID="txtTo" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Subject:
</td>
<td>
<asp:TextBox ID="txtSubject" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td valign = "top">
Body:
</td>
<td>
<asp:TextBox ID="txtBody" runat="server" TextMode = "MultiLine" Height = "150" Width = "200"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
File Attachment:
</td>
<td>
<asp:FileUpload ID="fuAttachment" runat="server" />
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Gmail Email:
</td>
<td>
<asp:TextBox ID="txtEmail" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Gmail Password:
</td>
<td>
<asp:TextBox ID="txtPassword" runat="server" TextMode = "Password"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:Button ID="Button1" Text="Send" OnClick="SendEmail" runat="server" />
</td>
</tr>
</table>
</form>
</body>
</html>
Asp.net aspx.cs page:-
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Net;
using System.Net.Mail;
public partial class _Default : System.Web.UI.Page
{
protected void SendEmail(object sender, EventArgs e)
{
string to = txtTo.Text;
string from = txtEmail.Text;
string subject = txtSubject.Text;
string body = txtBody.Text;
using (MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text))
{
mm.Subject = txtSubject.Text;
mm.Body = txtBody.Text;
if (fuAttachment.HasFile)
{
string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
}
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mm);
ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email sent.');", true);
}
}
}
Note :-Sometimes google setting require us to configure
use below link to configure: -
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