正则提取数据

using System.Text.RegularExpressions;

/*例1*/

Regex regtable1 = new Regex(patten1);

Match match1 = regtable1.Match(content);

 while (match1.Success )

{ 

   GroupCollection mc = match1.Groups;          

   name_s.Add(mc[1].Value);            

   match1 = match1.NextMatch();

}

/*例2*/

  string patten1 = @"(?is)</?a\b[^>]*>(?:(?!</?a).)*</a>";   //超链接过滤
// string patten1 = @"<td[^<]*>(?<xh>[^<]*)</td>";

 Regex regtable = new Regex(patten1);

 MatchCollection mc = regtable.Matches(tr);

 for (int j = 0; j < mc.Count; j=j*4)

   {

     string model2 = mc[j].Groups["xh"].Value;

    }

/*例3*/

    string patten1 = @"(?i)width[=:]\s*['""]?[^""';\s]+[""';]?";

    Regex regtable = new Regex(patten1);

    Match match1 = regtable.Match(content);

     if (match1.Success)

      {

       i++;

      MatchCollection mc = regtable.Matches(content);

     foreach (Match m in mc)

     {

      content = content.Replace(m.Value,"");

    }

}