using System; using System.Text.RegularExpressions; namespace ConsoleApp375 { class Program { static void Main(string[] args) { RegularExpressionDemo(); Console.ReadLine(); } static void RegularExpressionDemo() { string emailPattern = @"^[w!#$%&'*+-/=?^_`{|}~]+(.[w!#$%&'*+-/=?^_`{|}~]+)*@((([-w]+.)+[a-zA-Z]{2,4})|(([0-9]{1,3}.){3}[0-9]{1,3}))z"; Regex regex = new Regex(emailPattern); string myMail = "aaa@163.com"; var match = regex.Match(myMail); Console.WriteLine(match.Success); } } }