ASPSnippets Facebook API login Error: Object reference not set to an instance of an object

Last Reply 8 months ago By Andrea

Posted 8 months ago

Hi,

I have implemented FB login by following your article.

https://www.aspsnippets.com/Articles/Login-with-FaceBook-account-in-ASPNet-Website.aspx

It's working fine for the first time.. 

If user is already logged in to Facebook in the same browser, then Login is not working.. An error is occured. Please help me to solve this. The error is given below.

System.NullReferenceException: Object reference not set to an instance of an object.
   at ASPSnippets.FaceBookAPI.FaceBookConnect.?12?(WebException ?26?)
   at ASPSnippets.FaceBookAPI.FaceBookConnect.?8?(String ?23?)
   at ASPSnippets.FaceBookAPI.FaceBookConnect.Fetch(String ?16?, String ?17?)
   at Login.Page_Load(Object sender, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Posted 8 months ago
Hi @manunadh,
Please try the following

ASPSnippets FaceBook API: Login with FaceBook using Popup Window

It might help you.

Cheers Andrea.