title: Problems with the UpdatePanel
body: <p>When I drag and drop UpdatePanel on my user control I get this variable in the auto generated file of my user control:</p>
  
  <pre><code>   /// &lt;summary&gt;
      /// UpdatePanel1 control.
      /// &lt;/summary&gt;
      /// &lt;remarks&gt;
      /// Auto-generated field.
      /// To modify move field declaration from designer file to code-behind file.
      /// &lt;/remarks&gt;
      protected global::System.Web.UI.WebControls.UpdatePanel UpdatePanel1;
  </code></pre>
  
  <p>However, the UpdatePanel is found in a completely different namespace:</p>
  
  <pre><code>    /// &lt;summary&gt;
      /// UpdatePanel1 control.
      /// &lt;/summary&gt;
      /// &lt;remarks&gt;
      /// Auto-generated field.
      /// To modify move field declaration from designer file to code-behind file.
      /// &lt;/remarks&gt;
      protected global::System.Web.UI.UpdatePanel UpdatePanel1;
  </code></pre>
  
  <p>I have this config entry in my web.config under the assemblies config section:</p>
  
  <pre><code>  &lt;add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
  </code></pre>
  
  <p>Why is this behavior happening to me?</p>