I went thru the sample here: https://docs.telerik.com/devtools/aspnet-ajax/controls/ajaxloadingpanel/how-to/show-ajaxloadingpanel-on-initial-page-load
... on how to get a "Loading Panel" to show on a Page_Load ... problem is the sample code doesn't work primarily because the AjaxRequest doesn't fire until AFTER the Page_Load completes making it useless for my needs.
In my Page_Load event I load some complex data from a SQL server and then bind to a grid, however the loading of the complex data can take anywhere from 3-5 seconds. I need to present the user with a "Loading..." message "as the page loads".
I suppose I could move my long process into the AjaxRequest routine but is that the intended use?