title: Update Panel hangs in ASP.NET with large gridview result
body: <p>In my code I have an update panel that will hang with a large result.</p>
  
  <pre><code>&lt;asp:UpdatePanel ID="up1" EnableViewState="false" runat="server" UpdateMode="Conditional"&gt;
                              &lt;ContentTemplate&gt;
                              &lt;div id="tablediv" style="width:1250px;height:100%;overflow:hidden;margin: 0px auto 0px auto;padding-top:35px;padding-bottom:15px;"&gt;
  
                                  &lt;div class="ScrollableDiv" style="max-height:100%;width:100%;overflow-y:auto;"&gt;
                                      &lt;asp:GridView ID="gvResults"
                                          runat="server" 
                                          AlternatingRowStyle-CssClass="AlternateRow" RowStyle-CssClass="MainRow"
                                          AutoGenerateColumns="false"
                                          ShowHeader="false"
                                          DataKeyNames="pomOrdernum"
                                          CellPadding="0"
                                          CellSpacing="0"
                                          GridLines="None"
                                          &gt;.... &lt;/asp:Gridview&gt;
  ...
  &lt;/ContentTemplate&gt;
  .... 
  &lt;/UpdatePanel&gt;
  </code></pre>
  
  <p>I have a asp:Button (it's hidden and clicked via javascript) that when pressed will go and sort the data and update the gridview with the sorted results. With larger data sets this will just hang. I have ellipses where there is more code</p>