In this Article we can Send Multiple Email with the Attachment File at the same time and SMPT using ASP.NET and C#.


The .NET Framework makes the task of sending email from a web page easy. In this article send the multiple email throw the database.


And namespace is

using System.Net.Mail;

using System.Data.SqlClient;


This is ASPX code: -


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MultipleMailSend.aspx.cs"

Inherits="sapnamalik_MultipleMailSend" %>

<!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 runat="server">

<title>Multiple Email Sending</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<table id="tblemail" runat="server" cellpadding="0" cellspacing="0" width="100%" bgcolor="#ffccff">

<tr>

<td>

<fieldset>

<legend style="border: none; font-weight: bold; color: #660099; font-size: 12pt;

font-family: Segoe UI">Send Your Email </legend>

<table id="tblbody" runat="server" cellpadding="2" cellspacing="2" width="100%">

<tr>

<td colspan="2" align="center">

Fields marked with an asterisk (<asp:Label ID="Label1" runat="server" CssClass="redtext" Text="*"></asp:Label>)are mandatory

</td>

</tr>

<tr>

<td colspan="2" align="center">

<asp:Label ID="lblmail" CssClass="redtext" runat="server"></asp:Label></td>

</tr>

<tr>

<td width="10%" align="right">

<asp:Label ID="lblfrom" runat="server" Text="From:"></asp:Label>

<asp:Label ID="lblredstar3" runat="server" CssClass="redtext" Text="*"></asp:Label>

</td>

<td align="left" width="90%">

<asp:TextBox ID="txtemailfrom" Width="50%" runat="server"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" CssClass="redtext" Display="static" ControlToValidate="txtemailfrom" ErrorMessage="Enter valid Email Address" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator>

</td>

</tr>

<tr>

<td width="10%" align="right">

<asp:Label ID="lblsubject" runat="server" Text="Subject:"></asp:Label>

<asp:Label ID="lblredstar4" runat="server" CssClass="redtext" Text="*"></asp:Label>

</td>

<td align="left" width="90%">

<asp:TextBox ID="txtsubject" Width="50%" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td width="10%" align="right">

<asp:Label ID="lblbody" runat="server" Text="Body:"></asp:Label>

<asp:Label ID="lblredstar5" runat="server" CssClass="redtext" Text="*"></asp:Label>

</td>

<td align="left" width="90%">

<asp:TextBox ID="txtbody" Width="50%" runat="server" TextMode="MultiLine"></asp:TextBox>

</td>

</tr>

<tr>

<td width="10%" align="right">

<asp:Label ID="lblAttachFile" runat="server" Text="File to send:"></asp:Label>

</td>

<td align="left" width="90%">

<input type="file" id="fileAttachement" runat="server" name="fileAttachement" />

</td>

</tr>

<tr>

<td>

</td>

<td align="left">

<asp:Button ID="btnSendEmail" runat="server" Width="60px" Text="Send Mail" OnClick="btnSendEmail_Click" />

</td>

</tr>

</table>

</fieldset>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>


This is .CS code: -


using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.Net.Mail;

public partial class sapnamalik_MultipleMailSend : System.Web.UI.Page

{

DataSet ds = new DataSet();

SqlCommand cmd = new SqlCommand();

SqlConnection con;

protected void Page_Load(object sender, EventArgs e)

{

}

protected void btnSendEmail_Click(object sender, EventArgs e)

{

if (txtemailfrom.Text == "" || txtsubject.Text == "" || txtbody.Text == "")

{

lblmail.Text = "Please fill all mandatory fields.";

lblmail.Visible = true;

return;

}

SmtpClient smtpClient = new SmtpClient();

MailMessage mailMessage = new MailMessage();

con = new SqlConnection(ConfigurationManager.AppSettings["connect"]);

ArrayList list_emails = new ArrayList();

int i = 0;

string email;

con.Open();

SqlCommand cmd = new SqlCommand("Select EmailId from Employee", con);

SqlDataReader read_Email = cmd.ExecuteReader();

while (read_Email.Read())

{

email = read_Email.GetValue(i).ToString();

list_emails.Add(email); //Add email to a arraylist

i = i + 1 - 1;

}

read_Email.Close();

con.Close(); //Close connection

foreach (string email_to in list_emails)

{

if (fileAttachement.PostedFile != null)

{

HttpPostedFile AttachFile = fileAttachement.PostedFile;

int AttachFileLength = AttachFile.ContentLength;

if (AttachFileLength > 0)

{

FileName = Path.GetFileName(fileAttachement.PostedFile.FileName);

}

}

MailAddress fromAddress = new MailAddress(txtemailfrom.Text);

mailMessage.From = fromAddress;

mailMessage.Subject = txtsubject.Text;

mailMessage.Body = txtbody.Text;

string Body = "";

Body += '\n' + "From:" + txtemailfrom.Text;

Body += '\n' + "";

Body += '\n' + "Subject:" + txtsubject.Text;

Body += '\n' + "";

Body += '\n' + txtbody.Text;

mailMessage.IsBodyHtml = true;

mailMessage.Body = Body;

smtpClient.Host = "localHost";

smtpClient.Send(mailMessage);

lblmail.Visible = true;

lblmail.Text = "Your mail has been sent successfully";

tblemail.Visible = true;

}

txtemailfrom.Text = "";

txtsubject.Text = "";

txtbody.Text = "";

}

}

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<!--[if !vml]-->

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When we will run the application then the output.

mail.jpg