One of the most common functionalities used in Web development is sending email from a Web page.

The .NET framework makes the task of sending email from a Web page easier and in this article, I'll show you "how to send email with attachment file".


This is the aspx code:


<%@ 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 runat="server">

<title>Mail With Attachement</title>

</head>

<body>

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

<div>

<table cellpadding="4" cellspacing="4" width="40%" align="center" border="0" style="border-color: Silver;">

<tr>

<td align="center" style="background-color: Gray; height: 30px;">

<span>Sending mail with attachement in asp.net. </span>

</td>

</tr>

<tr>

<td>

<table cellpadding="2" cellspacing="2" width="70%" align="center" style="background-color: #A5A5A5;">

<tr>

<td>

<asp:Label ID="lblMailFrom" runat="server" Text="From:" Width="100px"></asp:Label>

<asp:TextBox ID="txtFrom" runat="server" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="lblMailTo" runat="server" Text="To:" Width="100px"></asp:Label>

<asp:TextBox ID="txtMailTo" runat="server" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="lblSubject" runat="server" Text="Subject:" Width="100px"></asp:Label>

<asp:TextBox ID="txtSubject" runat="server" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

<asp:Label ID="lblAttachFile" runat="server" Text="File to send:" Width="100px"></asp:Label>

<input type="file" id="fileAttachement" runat="server" name="fileAttachement" width="200px" />

</td>

</tr>

<tr>

<td>

<asp:Label ID="lblMessage" runat="server" Text="Your Message:" Width="100px"></asp:Label>

<asp:TextBox ID="txtMessage" runat="server" TextMode="MultiLine" Height="80px" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td align="center">

<asp:Button ID="btnSendMail" runat="server" Text="Send Mail" OnClick="btnSendMail_Click"

Width="140px" />

</td>

</tr>

</table>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

aspx.cs code:

using System;

using System.Data;

using System.Configuration;

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.IO;

using System.Net.Mail;

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

{

string FileNameToAttache;

protected void Page_Load(object sender, EventArgs e)

{

}

protected void btnSendMail_Click(object sender, EventArgs e)

{

MailMessage message = new MailMessage();

message.From = new MailAddress(txtFrom.Text);

message.To.Add(new MailAddress(txtMailTo.Text));

message.Body = txtMessage.Text;

message.IsBodyHtml = true;

message.Subject = txtSubject.Text;

if (AttachFile.PostedFile != null)

{

HttpPostedFile attFile = AttachFile.PostedFile;

int attachFileLength = attFile.ContentLength;

if (attachFileLength > 0)

{

FileNameToAttache = Path.GetFileName(AttachFile.PostedFile.FileName);

AttachFile.PostedFile.SaveAs(Server.MapPath(FileNameToAttache));

message.Attachments.Add(new Attachment(Server.MapPath(FileNameToAttache)));

}

}

SmtpClient emailWithAttach = new SmtpClient();

emailWithAttach.Host = "localhost";

emailWithAttach.DeliveryMethod = SmtpDeliveryMethod.Network;

emailWithAttach.UseDefaultCredentials = true;

emailWithAttach.Send(message);

}

}



On running the Application, output will be:

SendMail.JPG

Image 1.