Email Validation in the C# code behind

  string pattern=@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";

                System.Text.RegularExpressions.Match match =

                     Regex.Match(txtEmail.Text.Trim(), pattern, RegexOptions.IgnoreCase);

                if (match.Success)

                {

                }

                else

                {

                }