How to use Web Hierarchical Data Grid control if master page is already containing Script manager control? I am using Update control on content page, but it throws error Deserialization error: Invalid response.If I add script manager in content page it throws error that there should be only 1 instance of script manager
Not sure how exactly it works for whdg as I am just testing that object, but I recall a situation when I had a script manager in my master page and had to add a proxy script object (just drag and drop it to your content page). I am testing tonight the whdg object under that scenario, will let you know if I get it to work.