title: ASPxGridView rows disappear on paging and re-sorting
body: <p>I linked my ASPxGridView to a datasource, but whenever the GridView needs to display more than one page of information, the GridView disappears whenever I click on the 'Next Page' arrow. After I run the search again and populate the GridView, the second page of data is displayed.</p>
  
  <p>This same issue happens when I try to sort by a different column or if I try to move columns around. The data on the GridView disappears only to re-appear with the data adjusted the way I wanted when I run the search again.</p>
  
  <pre><code>&lt;dxwgv:ASPxGridView ID="commentsASPxGridView" runat="server" 
                  AutoGenerateColumns="True" IsCallBack="False"
                  Width="800px" SettingsPager-PageSize="25"&gt;
     &lt;Columns&gt;
        &lt;%-- Some data columns --%&gt;
     &lt;/Columns&gt;
     &lt;SettingsPager PageSize="25"&gt;&lt;/SettingsPager&gt;
  &lt;/dxwgv:ASPxGridView&gt;
  </code></pre>
  
  <p>My datasource for the GridView is a <code>DataTable</code> object.</p>