public static bool ValidateEMail(string email) { if (email == null || email == "") return false; Regex oRegExp = new Regex(@"^[A-Za-z0-9_.\-]+@[A-Za-z0-9_\-]+\.([A-Za-z0-9_\-]+\.)*[A-Za-z][A-Za-z]+$", RegexOptions.IgnoreCase); return oRegExp.Match(email).Success; }