For sending firstly add packages on your code:
using System.Web.Services;
using System.Net.Mail;
After that create method of sending mail:
public static void SendMail(string from, string to, string bcc, string cc, string subject, string body)
{
MailMessage mMailMessage = new MailMessage();
mMailMessage.From = new MailAddress(from);
mMailMessage.To.Add(new MailAddress(to));
if ((bcc != null) && (bcc != string.Empty))
{
mMailMessage.Bcc.Add(new MailAddress(bcc));
}
if ((cc != null) && (cc != string.Empty))
{
mMailMessage.CC.Add(new MailAddress(cc));
}
mMailMessage.Subject = subject;
mMailMessage.Body = body;
mMailMessage.IsBodyHtml = true;
mMailMessage.Priority = MailPriority.Normal;
SmtpClient mSmtpClient = new SmtpClient();
mSmtpClient.Send(mMailMessage);
}