Have been testing the controls on a Windows 10 machine with the new Edge browser and have noticed a problem with the WebDataMenu. When the WebDataMenu property IsContextMenu is set to False, the menu doesn't display and I get the following script error:
SCRIPT5007: Unable to get property 'PageRequestManager' of undefined or null reference. ScriptResource.axd
When I set the IsContextMenu property to True, then the WebDataMenu is displayed and works perfectly without any script errors.
I've tried using the WebScriptManager control as well on the page and I still get the same script error.
I've attached a copy of the .aspx code