Facebook登录按钮未在浏览器中显示

问题描述：

我已使用此代码

I have used this code

<fb:login-button length="long" onlogin="AllowExtendedPermissions()"></fb:login-button>

我也用过

also I have used

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml">

但它不起作用

请建议我
谢谢

but it is not working

please suggest me
Thanks

答

在此处获取示例asp.net网站，其中包含用于Facebook身份验证的完整源代码.

http://www.facebooksdk.blogspot.com/

Get a sample asp.net website here with full source code for the facebook authentication.

http://www.facebooksdk.blogspot.com/