How to tell the page is in AJAX callhttp://msmvps.com/blogs/egoldin/archive/2008/05/21/how-to-tell-the-page-is-in-ajax-call.aspxThe way to tell if the page is in an AJAX call is to check the ScriptManager.IsInAsyncPostBack property. Sounds trivial. The only reason I am writting about that is the very common confusion with the Page.IsAsync property that has absolutely nothing toenCommunityServer 2008.5 SP2 (Build: 40407.4157)