title: session in asp.net
body: <p>I have created a session in asp.net C# page, i'm storing user uniqueid in session like this, </p>
  
  <pre><code>Session["userid"] = clsUser.UniqueId;
  </code></pre>
  
  <p>and checking this unique id on each page and redirecting if session is null. But if i copy the users current URL in other tab of IE, it is not redirecting to login page. Instead it is maintaining session across the browser subtabs.</p>
  
  <p>How can i redirect to login page if user try to copy the url in another sub tab?</p>