how to send mail in asp.net using smtp

using System;
using System.Web.Mail;
namespace SMTPAuthentication
{
 public class SMTPAuthenticationExample
 {
  public static void SendMail()
  {
   string smtpServer = "smtp.domain.com";
   string userName = "johnDoe";
   string password = "pass";
   int cdoBasic = 1; 
   int cdoSendUsingPort = 2; 
   MailMessage msg = new MailMessage();
   if (userName.Length > 0)
   {
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", smtpServer);
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 25) ;
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", cdoSendUsingPort) ;
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", cdoBasic); 
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", userName); 
    msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password); 
   }
   msg.To = "someone@domain.com"; 
   msg.From = "me@domain.com";
   msg.Subject = "Subject";
   msg.Body = "Message";
   SmtpMail.SmtpServer = smtpServer;
   SmtpMail.Send(msg);
  }
 }
}