Question

I’m working with the Facbook C# SDK v4.0.2 because that is what is included in Telerik’s Sitefinity CMS. I tried updating but Sitefinity complains.

Does anyone know if v4.0.2 is still valid? I logged in using the FB JS SDK and the <fb:login-button/> and I’m able to query the API via JavaScript. When I try it with the C# SDK I always get (new FacebookApp).Session == null. I’m using the SDK in a webforms app but the example I am going off of is from the SDK’s MVC example.

SDK MVC example:

    public ActionResult Profile()
    {
        var app = new FacebookApp();
        if (app.Session == null)
        {
            // The user isnt logged in to Facebook
            // send them to the home page
            return RedirectToAction("Index");
        }

        // more example code ...
    }

I am doing something similar:

    var app = new FacebookApp();
    if (app.Session != null)    
    {
        FormsAuthentication.SetAuthCookie(user.UserName, false);    
    }
    else
    {
        //user is logged in to facebook but has not registered.
        response.Redirect("register.aspx?needsFacebook=1", true);
    }

Is v.4.0.2 still valid? Is this the way that I should be checking on the server if the user is authenticated with Facebook?

Answer 1

I ended up downloading the source for the 4.2 SDK, changing the assembly version in AssemblyInfo.cs to version 4.0.2 and recompiling. Thus, I tricked Sitefinity into thinking it was using the 4.0.2 SDK when it was really using the 4.2. This totally sidestepped my original question but at least everything is working now.