I've been reading a lot of posts and cannot find anything that addresses the issue of long AJAX calls and aborting/handling them.
I'm familar with the timeout values, etc. But I have two issues, here is my object line for the script manager (and I'm using 4.5 web forms so I know it can be just ScriptManager, and maybe tookitmanager is causing issues)
<asp:ToolkitScriptManager ID="SMMasterPage5" ScriptMode="Release" OnAsyncPostBackError="SMMasterPage5_AsyncPostBackError" AsyncPostBackTimeout="600" runat="server" />
The '_AsyncPostBackError' handler isn't working? It never goes into that block. Unless I'm not understanding what is occuring. I've tried to force it by setting to AsyncPostBackTimeout="10" and I just get an AJAX error dialog (but I'm in debug and on my dev machine (maybe this works in release and on server?)).
And the second issue what if I want to stop the call, so that my "Please wait..." doesn't get locked up and spins forever. I would like to gracefully stop the call after x miniutes and return to UI. I have the update panel on a masterpage wrapping the content page.
I'm not using async/await. Straight sync call.
I've searched the web and everything I've found is regarding the timeout setting.
Thanx.