Is Email
using System.Text.RegularExpressions; namespace Common.Core { public class Validator { public static bool IsEmail(string strEmail) { return Regex.IsMatch(strEmail, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"); } } }