正则匹配

1，匹配标签里面的内容

     StringBuilder sbStr = new StringBuilder();
            sbStr.Append("<Head>");
            sbStr.Append(" ");
            sbStr.Append("<Title>Ben Forta's HomePage</Title>");
            sbStr.Append(" ");
            sbStr.Append("</Head>");

            string expression = @"(?<=<title>).*?(?=</title>)";
            Regex reg = new Regex(expression, RegexOptions.IgnoreCase);
            MatchCollection mc = reg.Matches(sbStr.ToString());
            foreach (Match match in mc)
            {
                Console.WriteLine(match.Value);
            }
            Console.ReadKey();

2.匹配json

string str = "{"row1":[{"YYYWBH":"030301030000001","SLDW":"440309000000","WSYYSJ":"2015-06-11 10:00-11:00"},{"YYYWBH":"030301030000001","SLDW":"440309000000","WSYYSJ":"2015-06-11 10:00-11:00"}],"returnCode":"1","returnInfo":""}";

Regex regex = new Regex(@"""YYYWBH"":s*""(?'YYYWBH'[^""]*)"",s*""SLDW"":s*(?'SLDW'[^,]*),s*""WSYYSJ"":s*(?'WSYYSJ'[^}]*)", RegexOptions.IgnoreCase);
            //申明和实例化一个正则表达式对象，这里要加上参数RegexOptions.IgnoreCase，用于忽略文本大小写
            if (regex.IsMatch(str))
            {
                MatchCollection matches = regex.Matches(str);
                //上处可以匹配文本里有多组相似的结果全部结果，如果只有一组的话，用Match match = regex.Match(json);
                StringBuilder stringBuilder = new StringBuilder();
                foreach (Match match in matches)
                {
                    string name = match.Groups["YYYWBH"].Value;//此处Name是匹配表达式(?'Name'[^"]*)里的Name，显式分组
                    string age = match.Groups["SLDW"].Value;
                    string married = match.Groups["WSYYSJ"].Value;
                    stringBuilder.AppendFormat("YYYWBH:{0},SLDW:{1},WSYYSJ:{2} ", name, age, married);
                }
                Console.WriteLine(stringBuilder.ToString());
            }