Using The Facebook C# SDK For Fan Page Custom IFrame Tabs
Mar 11, 2011
I'm trying to create a simple iFrame custom tab on my fan page. I'm using the Facebook C# SDK and I need to read the signed_request value that Facebook passes to my iFrame page.
I can print the signed_request encoded value so I know its showing up, but when I try to decode it with the Facebook C# SDK I'm getting an error. I'm using .NET 4.0 and dynamics.
Here's my code:
signedRequestString contains the Request value with the signed_param passed from Facebook.
var result = FacebookSignedRequest.Parse(FacebookContext.Current.AppSecret, signedRequestString);
dynamic signedRequestJson = result.Data;
dynamic page = signedRequestJson.page;
And the error I receive:
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: Cannot perform runtime binding on a null reference at CallSite.Target(Closure , CallSite , Object ) at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0) at DecodeSignedRequest(String signedRequestString)
why I would be getting a null?
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