How to show a heavy-data gridview not in page load, to prevent freezing page?

 -          Put gridview into a Update panel

<asp:UpdatePanel ID="UpdatePanelMemberList" runat="server" UpdateMode="Conditional">

    <contenttemplate>

         <asp:GridView  runat="server"/>

    </contenttemplate>

</asp:UpdatePanel>

 -          Add a hidden field to let client side javascript to click button for showing  gridview

 <asp:HiddenField ID="H1" runat="server" />

-         
After page loaded in html trigger button click
event

    $(document).ready(function () {

        var hidenv = $("#<%=H1.ClientID %>").val();

        if (hidenv != 'show') return;

         $("#<%=Submit.ClientID %>").trigger('click');

    });