public string GetUrlDomainName(string url)

        {

            //获取域名的正则表达式

            string p = @"|?]*)";

            Regex reg = new Regex(p, RegexOptions.IgnoreCase);//不区分大小写匹配

            //正则表达式匹配结果

            Match m = reg.Match(url);

            //返回匹配结果值

            return m.Groups["domain"].Value;

        }

 

 

 

获取域名就不说了吧 下面是正则的使用

  public static string getNumTonum(string str)

  {

  string regx = @"([\d]+)-([\d]+)";

  string results = "";

  string all = "";

  Regex regex = new Regex(regx);

  foreach (Match m in regex.Matches(str))

  {

  string result= m.Groups[0].ToString();/获取正则中的匹配集合

  string[] rr = result.Split('-');

  int fir = int.Parse(rr[0].ToString());

   

  // int fir = int.Parse(first);

  int last = int.Parse(rr[1].ToString());

  int s = last - fir;

  for (int i = fir; i <= fir + s + 1; i++)

  {

  results += i + ",";

  }

  }

  return results;

  }