title: Response Redirect cannot be called in Page callback?
body: <p>I am getting the following error when I leave my web inactive for a while </p>
  
  <p>"Response.Redirect.cannot be called in a Page callback."</p>
  
  <p>I'm storing the user ids in session and during page load I check
  to see if the user id exists if not then I redirect them to the login page.</p>
  
  <p>I am using devexpress controls, How can I get the redirect to work?</p>