Error in sending Mail

MailMessage MyMailMessage = new MailMessage();
               MyMailMessage.From = new MailAddress("domain@gmail.com");
               MyMailMessage.To.Add("user@gmail.com");
               MyMailMessage.Subject = "Error Messages";
               MyMailMessage.Body = "Messages"
               SmtpClient smtpserver = new SmtpClient();
                smtpserver.Credentials = new System.Net.NetworkCredential("domain@gmail.com", "pwd");
      &nb ...