My question is very similar this but I guess I need to take it one step further.
Facebook says \"The data is passed to your application as a signed request. The signed_r
Based on your comment, it looks like you're still looking for the response that FB is sending. I believe it it contained in the Form collection in the HttpContext Request object. So from the page you specify as the redirect, you should be able to pull it from:
HttpContext.Current.Request.Form("signed_request")
Hope that helps shed some light. I'm still learning as I go so this may not be the best solution.
thanks, Jason