用于正则表达式的 Regex.Matches静态方法的几种用法

            //①正则表达式 = > 匹配字符串

            string Text = @"This is a book , this is my book , Is not IIS";



            //定义一个模式字符串,不仅仅是纯文本，还可以是正则表达式

            string Pattern = "is";



            MatchCollection Matches = Regex.Matches(

                Text,

                Pattern,

                RegexOptions.IgnoreCase |         //忽略大小写

                RegexOptions.ExplicitCapture |    //提高检索效率

                RegexOptions.RightToLeft          //从左向右匹配字符串

                );



            Console.WriteLine("从右向左匹配字符串：");



            foreach (Match NextMatch in Matches)

            {               

                Console.Write("匹配的位置：{0,2} ", NextMatch.Index);

                Console.Write("匹配的内容：{0,2} ", NextMatch.Value);

                Console.Write("/n");   

            }



            Console.WriteLine();



            //②匹配以大写I开头

            //“/b”是转义序列，代表开头和结尾(一个字的边界，忽略空白或标点)

            Pattern = @"/bI";

            Matches = Regex.Matches(

                Text,

                Pattern,

                RegexOptions.ExplicitCapture    //提高检索效率

                );



            Console.WriteLine("从左向右匹配字符串：");



            foreach (Match NextMatch in Matches)

            {

                Console.Write("匹配的位置：{0} ", NextMatch.Index);

                Console.Write("匹配的内容：{0} ", NextMatch.Value);

                Console.Write("/n");

            }



            Console.WriteLine();



            //③匹配以大写I开头，大写S结尾的字符串

            //“/b”是转义序列，代表开头和结尾(一个字的边界，忽略空白或标点)

            ///S*匹配任何不是空白的字符

            Pattern = @"/bI/S*S/b";

            Matches = Regex.Matches(

                Text,

                Pattern,

                RegexOptions.ExplicitCapture    //提高检索效率

                );



            Console.WriteLine("从左向右匹配字符串：");



            foreach (Match NextMatch in Matches)

            {

                Console.Write("匹配的位置：{0} ", NextMatch.Index);

                Console.Write("匹配的内容：{0} ", NextMatch.Value);

                Console.Write("/n");

            }



            Console.WriteLine();



            //④匹配his 或者iis，其中忽略大小写

            Pattern = @"[h|i]is";

            Matches = Regex.Matches(

                Text,

                Pattern,

                RegexOptions.IgnoreCase |         //忽略大小写

                RegexOptions.ExplicitCapture    //提高检索效率

                );



            Console.WriteLine("从左向右匹配字符串：");



            foreach (Match NextMatch in Matches)

            {

                Console.Write("匹配的位置：{0} ", NextMatch.Index);

                Console.Write("匹配的内容：{0} ", NextMatch.Value);

                Console.Write("/n");            

            }



            Console.WriteLine();



            //⑤对Url的分组匹配

            Text = "http://192.168.0.1:2008";

            Pattern = @"/b(/S+)://(/S+)(?::(/S+))/b";

            Matches = Regex.Matches(Text, Pattern);



            Console.WriteLine("从左向右匹配字符串：");



            foreach (Match NextMatch in Matches)

            {

                Console.Write("匹配的位置：{0} ", NextMatch.Index);

                Console.Write("匹配的内容：{0} ", NextMatch.Value);

                Console.Write("/n");



                for (int i = 0; i < NextMatch.Groups.Count; i++)

                {

                    Console.Write("匹配的组 {0}：{1,4} ", i + 1, NextMatch.Groups[i].Value);

                    Console.Write("/n");

                }

            }



            Console.Read();