title: Facebook Authentication c# integration using Facebook login buttons
body: <p>I have created an application that logs in and registers via a button click.  This all works as expected by using the access token in the code behind to process the login and gain users details for prefilling some forms.</p>
  
  <p>The customer has now asked for something similar to the facebook login button that puts the login/ application authentication in like a frame, rather than redirecting the user to facebook.</p>
  
  <p>Looking at the documentation I am a bit puzzled on how to do this.  Do the facebook login/authentication javascript buttons provide an access code for manipulation in the code behind.</p>