I am attempting to use the technique outlined in this article:
However, I am getting this error:
Uncaught Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object.
I suspect that the error might be because the AjaxRadManager event is triggered from a button click where the button is located inside a RadWindow. However, with this RadWindow, we are using a ContentTemplate. So, to me, that means that the code run from controls is being run from the parent page (if I understand the hierarchy senario correctly).