http://club.alipay.com/show_thread-80---5724879-.htm 这里是SDK介绍的链接。http://union.alipay.com/alipay/dev_download/shiwu/tiaoshi_utf_aspx.rar UTF-8示例下载
http://union.alipay.com/alipay/dev_download/shiwu/new_aspx.rar GBK示例下载
http://union.alipay.com/alipay/dev_download/shiwu/new_aspx.rar GBK示例下载
ASP.NET的没用过呢。应该也很简单。