Send Mail with attachment

Add - using System.Net.Mail;

MailMessage mail = new MailMessage();//object created
            //Setting From , To and CC

            mail.To.Add(Textto.Text);
            mail.From = new MailAddress(Textfrom.Text);
            mail.Subject = "subject";
            mail.Body = Textmessage.Text;
            if (FileUpload2.HasFile == false)
            {

            }
            else
            {
                mail.Attachments.Add(new Attachment(FileUpload2.FileContent, System.IO.Path.GetFileName(FileUpload2.FileName)));
            }

            mail.IsBodyHtml = true;// it will convert msg format in html
            //smtp object

            SmtpClient smtp = new SmtpClient();
            smtp.Host = "smtp.gmail.com";
            smtp.Credentials = new System.Net.NetworkCredential("email", "password");//email id & password
            smtp.EnableSsl = true;// server security licence will true then only mail will send
            smtp.Send(mail);//send function with mail object pass...which will send mail.