Regex实例
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Text.RegularExpressions; namespace RegexTest { class Program { static void Main(string[] args) { string msg = "Welcome to China come comecome"; var matchs = Regex.Matches(msg, @"\bcome\b"); foreach (var item in matchs) { Console.WriteLine(item); } msg = Regex.Replace(msg,@"\bcome\b","****"); Console.WriteLine(msg); string content = "Welcome to 'China' 'zoro' 'zore' 'zero'"; content = Regex.Replace(content, @"'(\w+)'","[$1]"); Console.WriteLine(content); string str = "我的生日是05/21/2010"; str = Regex.Replace(str, @"(\d+)\/(\d+)\/(\d+)", "$3-$2-$1"); Console.WriteLine(str); Console.WriteLine("===================="); string str2 = "zxsssssh@itcast.cn"; string s = Regex.Match(str2,@"(.+)@").Groups[1].Value; Console.WriteLine(s); string left = string.Empty; for (int i = 0; i < s.Length; i++) { left += "*"; } string ss = Regex.Replace(str2, @"(.+)@", left+"@"); Console.WriteLine(ss); Console.WriteLine("------------连线去重-----------"); string str3 = "佐佐罗罗"; str3 = Regex.Replace(str3, @"(.)\1+", "$1"); Console.WriteLine(str3); Console.WriteLine("------------查找出XXYY模式的叠词-----------"); string str4 = "浩浩荡荡、清清白白、AABB2、如火如荼、愈演愈烈、AXAY、MNYX,ABCD、没事找事、心服口服、AABBCC"; //查找出XXYY模式的叠词 MatchCollection matchs4 = Regex.Matches(str4, @"(.)\1(.)\2"); foreach (Match item in matchs4) { Console.WriteLine(item); } Console.WriteLine(matchs4.Count); Console.WriteLine("------------查找出XAXB模式的叠词-----------"); //查找出XAXB模式的叠词 MatchCollection matchs5 = Regex.Matches(str4, @"(.).\1."); foreach (Match item in matchs5) { Console.WriteLine(item); } Console.WriteLine("------------查找出ABCB模式的叠词-----------"); //查找出XAXB模式的叠词 MatchCollection matchs6 = Regex.Matches(str4, @".(.).\1"); foreach (Match item in matchs6) { Console.WriteLine(item); } Console.WriteLine("------------查找出ABABAB模式的叠词-----------"); //查找出XAXB模式的叠词 MatchCollection matchs7 = Regex.Matches(str4, @"(.)\1(.)\2(.)\3"); foreach (Match item in matchs7) { Console.WriteLine(item); } Console.ReadKey(); } } }