asp.net 异步考。

经典文章

http://www.cnblogs.com/wisdomqq/archive/2012/03/29/2417723.html

http://www.cnblogs.com/wisdomqq/archive/2012/03/26/2412349.html

http://www.cnblogs.com/fish-li/archive/2011/11/20/2256385.html#_label10

http://www.cnblogs.com/yuyijq/archive/2011/02/20/1958925.html

http://terrylee.cnblogs.com/archive/2005/12/05/290845.html

http://news.cnblogs.com/n/167496/