Microsoft AJAX UpdateProgress Control

Today, I learned that the coconut crab is the largest land-living arhropod in the world, Clinophobia is a fear of going to bed, and you can easily cause an animated gif to display while your ASP.NET AJAX Update panel is busy doing a call back. 

It's easy, just use the UpdateProgress Control.  Point it at the update panel and give it something to display and voila!  Here's a code example:

<asp:UpdateProgress ID="updateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1" DisplayAfter="100" DynamicLayout="true">
        <ProgressTemplate>
                <div class="Update"><img src="MyAnimated.gif" /></div>
        </ProgressTemplate>
</asp:UpdateProgress>