Update Panel with Update Progress

This is a simple example of showing a loading image while an update panel is waiting to load.

Go to this site and generate a loading image : Ajax Image Generator

Then add an update progress control to your page where the update control is and set the AssociatedUpdatePanelID to that of your update panel.

Inside the update progress add the progress template and then insert the image that you generated at the previous site.

Below is a example of this:

<asp:UpdatePanel ID="up_controls" runat="server">

            <ContentTemplate>

                <asp:PlaceHolder ID="ph_controls" runat="server"></asp:PlaceHolder> 

            </ContentTemplate>

        </asp:UpdatePanel>

        <asp:UpdateProgress AssociatedUpdatePanelID="up_controls" ID="up_progress" runat="server">

            <ProgressTemplate>

                <div class="form-content">

                    <p>

                        <img src="images/ajax-loader.gif" alt="Loading" />

                    </p>

                </div>

            </ProgressTemplate>

        </asp:UpdateProgress>