Gets the number of records in the view.
Assembly: PresentationFramework (in PresentationFramework.dll)
If a filter is set, this property value only includes items that pass the filter. If the underlying collection is of type IEnumerable, this is an O(N) operation. This value is cached until the collection changes.
Notes to Inheritors:
When deriving from CollectionView, override this property to provide a more efficient implementation.
Available since 3.0