求一正则表达式,提取html指定标签内容
<div id="content">
<p>ddd</p>
<div id="cc">ddd</div>
<img src="yili120x60.gif" />
<img src="120x60/omj120X60.gif" />
</div>

提取
<div id="content"> 这个div间的内容,即
<p>ddd</p>
<div id="cc">ddd</div>
<img src="yili120x60.gif" />
<img src="120x60/omj120X60.gif" />

文章采集用的.研究了一天正则平衡组,搞不懂,求高手

[解决办法]

C# code

            string str = @"<div class=""info"">aaaaaa<div id=""content"">     <p>ddd</p>  <div id=""cc"">ddd</div>  <img src=""yili120x60.gif"" />  <img src=""120x60/omj120X60.gif"" />  </div>bbbbb</div>";            Regex reg = new Regex(@"(?is)<div[^>]*?id=""content"">((?:(?<Open><div[^>]*?>)|(?<-Open></div>)|.*?)*)(?(Open)(?!))</div>");            Console.WriteLine(reg.Match(str).Groups[1].Value);