title: Roles available with Windows Authentication
body: <p>I'm trying to add Roles authentication to an Action in a Controller in an ASP.NET MVC application. The code looks something like this:</p>
  
  <pre><code>[Authorize(Roles = "SomeRoleName")]
  public ActionResult Index()
  {
      bool inRole = User.IsInRole("Admin");
  </code></pre>
  
  <p>If I remove the Authorize attribute and put a breakpoint on the last line in that code sample, is there a way that I can inspect the objects and find out what roles are available?</p>
  
  <p>e.g. I call User.IsInRole("Admin) in the Immediate window and it will give me a true/false value. How can I access the collection of roles available?</p>