RadControls for ASP.NET AJAX The principal visual aspect of RadAjax is the RadAjaxLoadingPanel that displays during updating. You can control the appearance of RadAjaxLoadingPanel by the following methods:
Modify the markup within the <telerik:RadAjaxLoadingPanel></telerik:RadAjaxLoadingPanel> tags.
Change the image that displays in the loading panel. RadAjax ships with a number of pre-defined animated "gif" images. Change the <src> tag path to one of the gifs in the installation directory: "\Telerik\RadControls for ASP.NET AJAX \Skins\Default\Ajax"
RadAjaxLoadingPanel descends from System.Web.UI.Panel and provides properties for back color, font and other properties. Typically you would use the markup and loading image to style your loading panel, but these Panel properties can also be used.
CopyASPX
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" BackColor="Honeydew"
BorderColor="Green" BorderStyle="Dotted" BorderWidth="3px" ForeColor="Blue" MinDisplayTime="1000">
<img alt="Loading..." src="loading3.gif" style="border: 0px;" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</telerik:RadAjaxLoadingPanel>