.net c#中应用正则表达式分组

1. string strRegexConn = @"((?:server=(?<server>[^;\(\)]+)[;]).*(?:provider=(?<provider>[^;]+);).*(?:host=(?<host>[\w\d\.]+)).*(?:port=(?<port>\d+)).*(?:service_name=(?<servicename>[^\(\)]+)).*(?:user\sid=(?<userid>[^;]+)).*(?:password=(?<password>[^;]+)))|(?:provider=(?<provider>[^;]+);).*?(?:server=(?<server>[^;\(\)]+)[;]).*?(?:database=(?<database>[^;]+).*?(?:user\sid=(?<userid>[^;]+)).*(?:password=(?<password>[^;]+)))";
2.  string str="provider=Microsoft Sql Server 2000;server=172.16.10.100;database=ObxMetabaseHDDemo;User ID=sa;Password=123;MultipleActiveResultSets=True";
3. Regex r = new Regex(strRegexConn, RegexOptions.IgnoreCase)；
4. Match m = r.Match(str)；
5.  string provider = m.Groups["provider"].Value;
6.  string server= m.Groups["server"].Value;
   备注：保证正则表达式是在同一行不然运行无法通过