It does not produce a completed result it just produces helpful starter code, you have to finish it and to do that you have to understand the code it does generate. Like if it has a method for BindGrid, you have to call that method in PageLoad. If you are using in place editing or any postback you need t wrap the call to BindGrid inside if(!Page.IsPsotback) and you have to do your own implementation for events.
Hope it helps,
Joe