title: Modify column in aspxgrid to display a hyper link and support group by
body: <p>I have a devexpress gridview that displays the UserID in a column.
  I group by this column, and I want to modify the value that is displayed by adding a hyperlink to point to the user profile page.</p>
  
  <pre><code>&lt;dx:ASPxGridView ..&gt;
  
  &lt;Columns&gt;
  ..
  
  &lt;dx:GridViewDataColumn FieldName="UserID" Caption="User" VisibleIndex="2" 
    Visible="false"&gt;
    &lt;Settings AllowSort="False" AllowDragDrop="False" /&gt;                                
  &lt;/dx:GridViewDataColumn&gt;
  
  ..
  &lt;/Columns&gt;
  
  &lt;/dx:ASPxGridView&gt;
  </code></pre>
  
  <p>But whenever I try to add a DataItemTemplate, it doesn't effect the output at all.</p>
  
  <p>How can I modify what is displayed with a link?</p>
  
  <p>Right now it shows:</p>
  
  <pre><code>User 12323
  </code></pre>
  
  <p>I want to display:</p>
  
  <pre><code>User &lt;a href="/profile.aspx?userid=12323"&gt;12323&lt;/a&gt;
  </code></pre>