How to Send Email With Attachment in asp.net

Send Email With Attachment in asp.net

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 all we need to add Syatem.Net.Mail namespace in code behind of aspx page. 

In my previous article i describe how to send mail using gmail in asp.net 





Create the page as shown in the image above, put textbox for message and FileUpload Control for adding the file attachment.

Write below mentioned code in click event of Send button in Code behind of page

C# Code Behind

01using System;

02using System.Data;

03using System.Configuration;

04using System.Web;

05using System.Web.Security;

06using System.Web.UI;

07using System.Web.UI.WebControls;

08using System.Web.UI.WebControls.WebParts;

09using System.Web.UI.HtmlControls;

10using System.Net.Mail;

11 

12public partial class _Default : System.Web.UI.Page

13{

14    protected void Page_Load(object sender, EventArgs e)

15    {

16 

17    }

18    protected void btnSend_Click(object sender, EventArgs e)

19    {

20        MailMessage mail = new MailMessage();

21        mail.To.Add(txtTo.Text);

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

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

24        mail.Subject = txtSubject.Text;

25        mail.Body = txtMessage.Text;

26        mail.IsBodyHtml = true;

27 

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

29        if (FileUpload1.HasFile)

30        {

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

32        }

33        SmtpClient smtp = new SmtpClient();

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

35        smtp.Credentials = new System.Net.NetworkCredential

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

37        //Or your Smtp Email ID and Password

38        smtp.EnableSsl = true;

39        smtp.Send(mail);

40 

41    }

42}

VB.NET Code Behind

01Imports System

02Imports System.Data

03Imports System.Configuration

04Imports System.Web

05Imports System.Web.Security

06Imports System.Web.UI

07Imports System.Web.UI.WebControls

08Imports System.Web.UI.WebControls.WebParts

09Imports System.Web.UI.HtmlControls

10Imports System.Net.Mail

11 

12Public Partial Class _Default

13    Inherits System.Web.UI.Page

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

15 

16    End Sub

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

18        Dim mail As New MailMessage()

19        mail.[To].Add(txtTo.Text)

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

21        mail.From = New MailAddress(txtFrom.Text)

22        mail.Subject = txtSubject.Text

23        mail.Body = txtMessage.Text

24        mail.IsBodyHtml = True

25 

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

27        If FileUpload1.HasFile Then

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

29        End If

30        Dim smtp As New SmtpClient()

31        smtp.Host = "smtp.gmail.com"

32        'Or Your SMTP Server Address

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

34        'Or your Smtp Email ID and Password

35        smtp.EnableSsl = True

36 

37        smtp.Send(mail)

38    End Sub

39End Class

Build and run the application to test the code

Hope this helps