Grouping prevents Virtualizing?

Is it correct, that using the grouping functionality of a ListView (through CollectionView) will prevent virtualizatio开发者_开发问答n of the items in the ListView (.net4).

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As of .net 4.5, this should be available:

VirtualizatingPanel.IsVirtualizingWhenGrouping

http://msdn.microsoft.com/en-us/library/system.windows.controls.virtualizingpanel.isvirtualizingwhengrouping.aspx

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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.