Sending Email with Attachment in Asp.net

1. Open Visual Studio
2. Create a New Website
3. Create Web Page
4. Design UI like below image

5. Add namespaces

using System.Net;

using System.Net.Mail;

using System.Net.Security;

using System.Security.Cryptography.X509Certificates;

using System.IO;

6.Write Code on Send Button Click Event

string path = FileUpload1.PostedFile.FileName.ToString();

        try

        {

            MailMessage mail = new MailMessage();

            mail.To.Add(txtto.Text);

            mail.From = new MailAddress("sapna@gmail.com");// your email

            mail.Subject = txtsubject.Text;

            string Body = null;

            Body = txtbody.Text;

            mail.Body = Body;

            mail.IsBodyHtml = true;

            SmtpClient smtp = new SmtpClient();

            smtp.Host = "smtp.gmail.com";

            smtp.Credentials = new System.Net.NetworkCredential("sapna@gmail.com", "123456");//your email and password

            smtp.EnableSsl = true;

            ServicePointManager.ServerCertificateValidationCallback = delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };

            if (File.Exists(path))

            {

                System.Net.Mail.Attachment attachment;

                attachment = new System.Net.Mail.Attachment(path);

                mail.Attachments.Add(attachment);

            }

            smtp.Send(mail);

          

        }

        catch (Exception ex)

        {

            ex.ToString();

      

        }

    }