请一正则表达式

[jzinfojzinfo]

<a href="http://mp3.xx.com/u?n=1&u=http://www.neupioneer.com/city/blog/uploadfile/Y2JjaGZnaWtiaGhqZmlwcGIy.MP3" target=_blank>


我要取得http://www.neupioneer.com/city/blog/uploadfile/Y2JjaGZnaWtiaGhqZmlwcGIy.MP3

请问如何写正则表达式?

<a\040href="http://mp3.xx.com/u?n=1&u=(?<D>[^/]+?)"\target=_blank>

我写的哪段有错误？

[jzinfojzinfo]

http://mp3.xx.com/u?n=1&u=(?<D>[^/]+?)"\040target=_blank>

这是我写的正则

[jzinfojzinfo]

up

[saucer]

try

Regex re = new Regex(@"<a\s+?href=""http://mp3.xx.com/u\?n=1&u=(?<D>[^""]+?)""\s+?[^>]*?>",RegexOptions.IgnoreCase);