正则域名

public string GetUrlDomainName(string url)
        {
            //获取域名的正则表达式
            string p = @"http://[^\.]*\.(?<domain>[^/|?]*)";
            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;
  }