title: Store/assign roles of authenticated users
body: <p>I am upgrading a site to use MVC and I am looking for the best way to set up Authentication.</p>
  
  <p>At this point, I have the log-in working off of Active Directory: validating a username and password, and then setting the Auth cookie.</p>
  
  <p>How do I store the user's role information at time of log-in, in order for my controllers to see those roles as the user navigates through the site?</p>
  
  <pre><code>[Authorize(Roles = "admin")]
  </code></pre>
  
  <p>I have no problem getting a list of roles from Active Directory.  I just don't know where to put them so that the controllers will see them.</p>