C# Send Email With Attachment in asp.net ~ Programmer's Blog

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In this example i am going to describe how to send email with attachment in ASP.NET using fileUpload Control. I am saving the uploaded file into memory stream rather then saving it on server.And for this example i m using Gmail SMTP server to send mail, this code also works fine with any SMTP Server. For sending Email in ASP.NET , first of allwe need to add Syatem.Net.Mail namespace in code behind of aspx page.

C# Code Behind

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.Net.Mail;

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

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void btnSend_Click(object sender, EventArgs e)

{

MailMessage mail = new MailMessage();

mail.To.Add(txtTo.Text);

//mail.To.Add("amit_jain_online@yahoo.com");

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

mail.Subject = txtSubject.Text;

mail.Body = txtMessage.Text;

mail.IsBodyHtml = true;

//Attach file using FileUpload Control and put the file in memory stream

if (FileUpload1.HasFile)

{

mail.Attachments.Add(new Attachment(FileUpload1.PostedFile.InputStream, FileUpload1.FileName));

}

SmtpClient smtp = new SmtpClient();

smtp.Host = "smtp.gmail.com"; //Or Your SMTP Server Address

smtp.Credentials = new System.Net.NetworkCredential

("YourGmailID@gmail.com", "YourGmailPassword");

//Or your Smtp Email ID and Password

smtp.EnableSsl = true;

smtp.Send(mail);

}

}

VB.NET Code Behind

Imports System

Imports System.Data

Imports System.Configuration

Imports System.Web

Imports System.Web.Security

Imports System.Web.UI

Imports System.Web.UI.WebControls

Imports System.Web.UI.WebControls.WebParts

Imports System.Web.UI.HtmlControls

Imports System.Net.Mail

Public Partial Class _Default

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

End Sub

Protected Sub btnSend_Click(ByVal sender As Object, ByVal e As EventArgs)

Dim mail As New MailMessage()

mail.[To].Add(txtTo.Text)

'mail.To.Add("amit_jain_online@yahoo.com");

mail.From = New MailAddress(txtFrom.Text)

mail.Subject = txtSubject.Text

mail.Body = txtMessage.Text

mail.IsBodyHtml = True

'Attach file using FileUpload Control and put the file in memory stream

If FileUpload1.HasFile Then

mail.Attachments.Add(New Attachment(FileUpload1.PostedFile.InputStream, FileUpload1.FileName))

End If

Dim smtp As New SmtpClient()

smtp.Host = "smtp.gmail.com"

'Or Your SMTP Server Address

smtp.Credentials = New System.Net.NetworkCredential("YourGmailID@gmail.com", "YourGmailPassword")

'Or your Smtp Email ID and Password

smtp.EnableSsl = True

smtp.Send(mail)

End Sub

End Class