It would appear that you are getting linked to a different place than I. If I type Me.BindingContext and press F1, I get a page about BindingContext class members. Its still not the property Im looking for.
There are many links on this page, and those links all contain a wealth of information. But the point is, you still have to hunt for answers. In VS6, the system gave you the answers (in most cases) with the first key stroke.
Even in your case where the system returned the BindingContext property (as opposed to the class as it does for me), where on this page does it tell you that the Item member is the default member? It doesnt. You can only figure this by hunting and trail. I only figured this one out when I stumbled accross it.
All in all, I still find this system very confusing.