CanvasAuthorizer.Authorize（）在Facebook中C＃sdk 4.0.1破？

Question

我一直在Facebook的Canvas應用程序（ASP.NET Web窗體）中使用舊的Facebook C＃SDK（版本4.0.1）。我從SDK中使用的唯一功能是授權用戶並獲取Facebook用戶標識。該API適用於安裝畫布應用但不適用於新用戶的用戶。

我有下面的代碼：

Dim lFacebookApp As FacebookApp() 
Dim lCanvasAuthorizer As CanvasAuthorizer 

Dim lFacebookSettings As New FacebookSettings() 
Dim lCanvasSettings As New CanvasSettings() 

lFacebookSettings.AppId = "XXXXXXXX" 
lFacebookSettings.AppSecret = "XXXXXXXXXX" 
lFacebookSettings.CookieSupport = True 

lCanvasSettings.CanvasPageUrl = "Canvaspageurl" 
lCanvasSettings.CanvasUrl = "canvasUrl" 
lCanvasSettings.AuthorizeCancelUrl = New Uri("http://www.facebook.com") 

lFacebookApp = New FacebookApp(lFacebookSettings) 
lCanvasAuthorizer = New CanvasAuthorizer(FacebookApp, lCanvasSettings) 
lCanvasAuthorizer.Perms = "user_about_me, publish_stream" 

If (lCanvasAuthorizer.Authorize()) Then 
Dim info = lFacebookApp.Get("me") 
Dim userId = info.id 
End If 

該如何使用工作：當一個新的用戶瀏覽到www.apps.facebook.com/<appname> ，lCanvasAuthorizer.Authorize()自動對話框打開日誌，然後OAuth的對話框。

但是，現在它在Dim info = lFacebookApp.Get("me")

(OAuthException) Error validating access token: The session is invalid because the user logged out. 

lCanvasAuthorizer.Authorize()應該打開用戶的OAuth對話框拋出下面的錯誤，但事實並非如此。舊的Facebook C＃SDK是否損壞？

Answer 1

Facebook C＃SDK版本4.0.1已棄用。使用latest version。