var source = "劉備關(guān)羽張飛孫權(quán)何問起";//Regex regex = new Regex("孫權(quán)");//if (regex.IsMatch(source))//{// Console.WriteLine("字符串中包含有敏感詞:孫權(quán)！");//}if (Regex.IsMatch(source, "孫權(quán)")) {　　Console.WriteLine("字符串中包含有敏感詞:孫權(quán)！");}Console.ReadLine();

var source = "123abc345DEf";Regex regex = new Regex("def",RegexOptions.IgnoreCase);if (regex.IsMatch(source)){　　Console.WriteLine("字符串中包含有敏感詞:def！");} Console.ReadLine();

var source = "123abc456ABC789";// 靜態(tài)方法//var newSource=Regex.Replace(source,"abc","|",RegexOptions.IgnoreCase);// 實(shí)例方法Regex regex = new Regex("abc", RegexOptions.IgnoreCase);var newSource = regex.Replace(source, "|");Console.WriteLine("原字符串："+source);Console.WriteLine("替換后的字符串：" + newSource);Console.ReadLine();

var source = "123abc456ABCD789"; Regex regex = new Regex("[A-Z]{3}", RegexOptions.IgnoreCase);var newSource = regex.Replace(source,new MatchEvaluator(OutPutMatch));Console.WriteLine("原字符串："+source);Console.WriteLine("替換后的字符串：" + newSource);Console.ReadLine(); //柔城private static string OutPutMatch(Match match){　　return "<b>" +match.Value+ "</b>";}

 1             #region 身份證號(hào)碼正則表達(dá)式 2             //何問起 3              4                 Console.WriteLine("請(qǐng)輸入一個(gè)身份證號(hào)碼"); 5                 string id = Console.ReadLine(); 6                 bool b4 = Regex.IsMatch(id, @"^/d{15}|/d{18}$"); 7                 bool b5 = Regex.IsMatch(id, @"^(/d{15}|/d{18})$"); 8                 Console.WriteLine(b4); 9                 Console.WriteLine(b5);10             11             #endregion12 13             #region 匹配電話號(hào)碼14             //hovertree15             16 17                 Console.WriteLine("請(qǐng)輸入電話號(hào)碼");18                 string phone = Console.ReadLine();19                 bool b = Regex.IsMatch(phone, @"^((/d{3,4}/-/d?{7,8})|(/d{5}))$");20                 Console.WriteLine(b);21             22             #endregion23 24             #region 匹配email的regex25 26             //hovertree27             28                 Console.WriteLine("請(qǐng)輸入Email地址");29                 string email = Console.ReadLine();30                 bool bhvt = Regex.IsMatch(email, @"^/w+@/w+/./w+$");31                 Console.WriteLine(bhvt);32             33             #endregion34 35             #region 匹配ip地址的regex36             //hovertree37             38                 Console.WriteLine("請(qǐng)輸入一個(gè)IP地址");39                 string ip = Console.ReadLine();40                 bool bkly = Regex.IsMatch(ip, @"^/d{1,3}(/./d{1,3}){3}$");41                 Console.WriteLine(bkly);42             43             #endregion44 45             #region 匹配日期合法regex46             //何問起47             48                 Console.WriteLine("請(qǐng)輸入一個(gè)日期");49                 string date = Console.ReadLine();50                 bool bhovertree = Regex.IsMatch(date, @"^/d{4}/-/d{1,2}/-/d{1,2}$");51                 Console.WriteLine(bhovertree);52             53             #endregion54 55 56             #region 匹配url地址的regex57             //"http://hovertree.com"58             //"http://keleyi.com/a/bjae/h1o76nuh.htm?id=3&name=aaa"59             //"https://s.taobao.com/search?q=hover+tree&js=1&stats_click=search_radio_all%3A1&initiative_id=staobaoz_20151204&ie=utf8"60             //"ftp://127.0.0.1/myslider.txt"61 62             //hovertree63             64                 Console.WriteLine("請(qǐng)輸入url地址");65                 string url = Console.ReadLine();66                 bool bkeleyi = Regex.IsMatch(url, @"^[a-zA-Z]+://.+$");67                 Console.WriteLine(bkeleyi);68             69             #endregion