Here's my scenario. My Visual Studio 2010 Web Application has just been upgraded from an older version of Telerik to the newest version (Q1 2012 SP1) to support IE9. I am noticing quite a few UI issues and some things that stopped working. The most prominent is the resizing of controls on the screen. We used to use the AjaxManager's "OnResponseEnd" to fire a "resize" client-side function and all was right with the world. That apparently has stopped working and I was wondering if the newest version of the ASP .NET controls need some extra work.
I have a MasterPage within my "MainPage.aspx" file which holds my main menu. Under the main menu I have a UserControl (which is really just an iFrame). Depending on which menu item is selected I load a specific ASPX page into my iFrame user control. Now my "MainPage" has a RadAajaxManager on it and the ClientEvents get called correctly (OnResponseEnd is what I'm using) with no issues.
My UserControl (simple ASCX file) does NOT have a RadAjaxManager ... but the ASPX page it loads DOES have one. For example:
userControl.FrameSource = SubPage.aspx;
SubPage.aspx DOES have a RadAjaxManager ... but I cannot get the OnRequestStart or OnResponseEnd to fire. Like I mentioned before...this was all working in the old version of Telerik on IE7 and 8 (comp mode). Is it my code, new Telerik, IE9? Any help would be greatly apprecited.