Grouping prevents Virtualizing?

Question

Is it correct, that using the grouping functionality of a ListView (through CollectionView) will prevent virtualization of the items in the ListView (.net4).

Answer 1

Yes, this is true. Once you add a GroupDescription, the ItemsPanel changes to a non-virtualizing version. If you set the panel by hand, then you also have no virtualizing unless you are using a custom panel that implements it for you.

any control derived from ItemsControl implements this functionality.