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C# code examples: System.Text.RegularExpressions.Regex

IsMatch(System.String)

using System; using System.Text.RegularExpressions; public class Program { public static void Main() { Program.showResult("3721CJ"); Program.showResult("3721 CJ"); Program.showResult("3721 cJ"); Console.ReadKey(); } static private void showResult(string postCode) { Regex dutchPostCodeRegEx = new Regex(@"(\d{4}[A-Z]{2})|(\d{4} [A-Z]{2})"); Console.WriteLine((dutchPostCodeRegEx.IsMatch(postCode) ? "Valid postcode: {0}" : "Invalid postcode: {0}"), postCode); } }

IsMatch(System.String, System.String)

using System; using System.Text.RegularExpressions; public class Program { public static void Main() { Program.showResult("3721CJ"); Program.showResult("3721 CJ"); Program.showResult("3721 cJ"); Console.ReadKey(); } static private void showResult(string postCode) { string pattern = @"(\d{4}[A-Z]{2})|(\d{4} [A-Z]{2})"; Console.WriteLine((Regex.IsMatch(postCode, pattern) ? "Valid postcode: {0}" : "Invalid postcode: {0}"), postCode); } }

Match(System.String)

using System; using System.Text.RegularExpressions; public class Program { public static void Main() { string pattern = @"(.+)@(.+)"; Regex r = new Regex(pattern); Match m = r.Match("anon@majstro.com"); Console.WriteLine("Local-part: {0}", m.Groups[1]); Console.WriteLine("Domain: {0}", m.Groups[2]); Console.ReadKey(); } }

Match(System.String, System.String)

using System; using System.Text.RegularExpressions; public class Program { public static void Main() { string pattern = @"(.+)@(.+)"; Match m = Regex.Match("anon@majstro.com", pattern); Console.WriteLine("Local-part: {0}", m.Groups[1]); Console.WriteLine("Domain: {0}", m.Groups[2]); Console.ReadKey(); } }