title: ASP.NET MVC check if user belongs to [x] group
body: <p>Maybe I'm approaching this the wrong way and should be doing everything in action filters, in which case please point me in the right direction!</p>
  
  <p>I'm setting up my ASP.NET MVC application so that the one HomeController Index action delivers two different types of content, like so:</p>
  
  <pre><code>if(Request.IsAuthenticated)
    return View("IndexRegistered");
  else
    return View("IndexGuest");
  </code></pre>
  
  <p>This is fine but say I want to split it into three so Administrator members get their own page...</p>
  
  <pre><code>if(Request.IsAuthenticated)
  {
    if( /* user is a member of administrators */)
      return View("IndexAdministrator");
    else
      return View("IndexCustomer");
  }
  else
    return View("IndexGuest");
  </code></pre>
  
  <p>Can someone enlighten me as to the missing piece of this puzzle?</p>