Form Post with Facebook C# SDK

Question

Can anyone point me in the direction of how I can use a form post with the Facebook C# SDK in an MVC app? It\'s an iframe based Canvas application.

I have the follow

Answer 1

There is actually a helper for MVC forms that will fix this issue for you.

The helper goes inside your form:

Razor Syntax:

@Html.FacebookSignedRequest();

ASP.NET Syntax

<%=Html.FacebookSignedRequest() %>

All this actually does is store your signed_requeset as a hidden on your form. This way when the form is posted the Facebook authenticator will be able to reauthorize the request.