how to send an email in c#

public void sendMail(string toList, string fromlist, string ccList, string subject, string body)
  {
      MailMessage message = new MailMessage();
      SmtpClient smtpClient = new SmtpClient();
      MailAddress fromAddress = new MailAddress(fromlist);
      message.From = fromAddress;
      message.To.Add(toList);
      if (ccList != null && ccList != string.Empty)
      {
          message.CC.Add(ccList);
      }
      message.Subject = subject;
      message.IsBodyHtml = true;
      message.Body = body;
      smtpClient.Host = "127.0.0.1";
      smtpClient.Port = 25;
      smtpClient.UseDefaultCredentials = true;
      smtpClient.Credentials = new System.Net.NetworkCredential(txtfromadd.Text, txtpwd.Text);
      smtpClient.Send(message);

  }

  protected void btnSubmit_Click(object sender, EventArgs e)
  {
      //string fromadd = txtfromadd.Text;
      string tocc = "suguna@cavintek.com";
      sendMail(txtToAddress.Text, txtfromadd.Text, tocc, txtSubject.Text, txtContent.Text);
  }