不客气，但我们希望事情要比这更加具体:
代码项目快速解答常见问题解答 [ http://***.com/questions/11930829/access-session-in-class-library [^ ]

No to be rude, but we like things to be a little more specific than that:
Code Project Quick Answers FAQ[^]

and I found an answer to your question on Google, the first link seem to be appropiate:
http://***.com/questions/11930829/access-session-in-class-library[^]