正则
..........   
  <li>  
  <a   href= "aaaa "> aaaaaaaaa </a>     <a   href= "ppp "> 评 </a>  
  <a   href= "bbbb "> bbbbbbbbb </a>  
  <a   href= "cccc "> ccccccccc </a>     <a   href= "ttt "> 讨 </a>  
  <a   href= "dddd "> ddddddddd </a>  
  <a   href= "eeee "> eeeeeeeee </a>  
  <a   href= "ffff "> fffffffff </a>  
  <a   href= "gggg "> ggggggggg </a>  
  </li>    
 ............   
 我要捕获url和title,但是不希望捕获类似 "评 "/ "讨 "这种字符数少于2的 <a> 标记的url和title     
  <li> (.*? <a   href=\ "(? <Url> [^\ "]+).*?> (? <Title> [^ <]{2,}) </a> ){1,20}?\\s* </li>    
 上边我写的这个title和url叉了   
 多谢!!
------解决方案--------------------Regex reg=new Regex(@ " <a href= " "(? <Url> [^ " "]+) " "> \w{2,} </a>  "); 
 foreach(Match m in reg.Matches(str)) 
 { 
 	str=m.Groups[ "Url "].Value; 
 	str= " "; 
 }//简简单单就好
------解决方案--------------------.....late