How to trigger UpdateProgress on initial pageload in asp.net <p><strong>Question:</strong> Why does my UpdateProgress not show during the initial page load but does for subsequent postbacks via button click?</p> <p>The only way I have managed to get this working is with a timer, which I'm not keen on. Is there another way?</p> <p>Can someone explain why <code>doSearch()</code> causes the updateprogress to work from a button click but not on pageload via docoment ready?</p> <p><strong>Code:</strong></p> <p>Js handler:</p> <pre><code>&lt;script&gt; $(document).ready(doSearch); function doSearch() { $('#&lt;%= UpdatePanel1Trigger.ClientID %&gt;').click(); return false; } &lt;/script&gt; </code></pre> <p>aspx:</p> <pre><code>//if i click this button the updateprogress works //and the panel loads &lt;asp:Button ID="btnSearch" runat="server" Text="Search" CssClass="form-control" OnClientClick="return doSearch();" /&gt; &lt;asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" OnLoad="UpdatePanel1_Load" ChildrenAsTriggers="true"&gt; &lt;ContentTemplate&gt; &lt;asp:Button ID="UpdatePanel1Trigger" runat="server" style="display:none" OnClick="UpdatePanel1Trigger_Click" /&gt; &lt;%--gridview that takes a while to load--%&gt; &lt;/ContentTemplate&gt; &lt;/asp:UpdatePanel&gt; &lt;asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1" DisplayAfter="1"&gt; &lt;ProgressTemplate&gt; &lt;asp:Image ID="imgUpdateProgress1" runat="server" ImageUrl="~/Images/spinner.gif" AlternateText="Loading ..." ToolTip="Loading ..."/&gt; &lt;/ProgressTemplate&gt; &lt;/asp:UpdateProgress&gt; </code></pre> <p>Codebehind:</p> <pre><code> protected void UpdatePanel1Trigger_Click(object sender, EventArgs e) { if (!String.IsNullOrEmpty(m_search)) { performSearch(); //loads data for gridview in updatepanel } } </code></pre>