I\'ve created a page which combines an inline jQuery UI datepicker . I wan\'t to initiate a callback to the updatepanel when the user clicks a new date to update some data. Now,
I think you my find this article from MSDN interesting: http://msdn.microsoft.com/en-us/magazine/cc163413.aspx
The article says that "Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(" also attaches to Updatepanel complete events.
It also fires each time an asynchronous callback launched on behalf of an UpdatePanel control completes and the content inside that UpdatePanel is updated.
then in your handler you can loop through the updatedpanels with
var panels = args.get_panelsUpdated();
for (i=0; i < panels.length; i++) { alert(panels[i]); }
I would stray away from using the _ postBackSettings because of the " _ " denotes privacy and may be discontinued in future versions of asp.net ajax.