title: Object reference not set to an instance of an object
body: <p>When I try to open the page from my IDE in VS 2008 using "VIEW IN BROWSER" option I get &quot;Object reference not set to an instance of an object&quot; error.</p>
  
  <p>The piece of code I get this error :   </p>
  
  <pre><code> XResult = Request.QueryString["res"];    
   TextBox1.Text = XResult.ToString();
  </code></pre>