Check input as a valid EMailID in C#

 bool IsValidEmail(string EMailID)
    {
        Regex regex = new Regex(@"^[-a-zA-Z0-9][-.a-zA-Z0-9]*@[-.a-zA-Z0-9]+(\.[-.a-zA-Z0-9]+)*\.(com|edu|info|gov|int|mil|net|org|[a-zA-Z]{2})$",RegexOptions.IgnorePatternWhitespace);     
        return regex.IsMatch(EMailID);
     }