asp.net mvc 4.0 facebook login

http://www.asp.net/mvc/overview/getting-started/using-oauth-providers-with-mvc

1) Set up basics for Facebook login

Get app id and secret id from facebook developers app page. Set site URL to match the site URL that I want FB to communicate with. Example, if localhost, set URL in facebook app page to: http://localhost:23422 ... but if pushed to live, then change URL in facebook app page to proper web address.

Set the id values in /App_Start/AuthConfig.cs

2) Grab basic data (no token needed) after login verified

3) Grab "ExtraData" (no token needed)

Set up Migrations.
PM> enable-migrations
PM>  add-migration initial –IgnoreChanges
PM> update-database

Make model changes.
PM> add-migration nameAnything
PM> update-database (this syncs up DB with new changes reflected in "add-migration"


4) Use Nuget to get the Facebook SDK (more info: http://ntotten.com/2012/12/19/facebook-authentication-with-the-facebook-c-sdk-and-asp-net-mvc-4/) ...

5) Use Facebook SDK library to mine down and grab more data (token needed)

Be sure to write code to close session upon logout. Otherwise, default is to log out after 20 min (I think) of being idle. Look for Nanonerd's post/answer:

http://stackoverflow.com/questions/13117728/fb-logout-with-c-sharp-sdk/17015865#17015865

(edit "next = 'http://localhost:51042/'" with proper URL)

public ActionResult LogOff()
    {
        WebSecurity.Logout();

        if (Session["facebooktoken"] != null)
        {
            var fb = new Facebook.FacebookClient();
            var logoutUrl = fb.GetLogoutUrl(new { access_token = Session["facebooktoken"], next = "http://localhost:51042/" });

            Response.Redirect(logoutUrl.AbsoluteUri);
            Session.RemoveAll();
        } 

        return RedirectToAction("Index", "Home");
    }