使用Oauth2，因为Facebook Connect确实已经过时了。以下链接帮助我做了很多工作：

It's better to use Oauth2 because Facebook Connect is indeed obsolete. The following links helped me a lot to do it:

1 - http://www.asp.net/mvc/ tutorials / mvc-5 / create-an-aspnet-mvc-5-app-with-facebook-and-google-oauth2-and-openid-sign-on

2 - 如何从我的asp.net mvc 3网站发布在Facebook中

3 - 将多个用户帐户合并在一起的架构

4 - http：// www.aspsnippets.com/Articles/Post-Publish-and-Share-content-on-users-FaceBook-Wall-using-G raph-API-in-ASPNet.aspx