'宣言 Protected Friend Overridable Sub OnSelectedCellsCollectionChanged( _ ByVal previouslySelectedCells As PivotSelectedCellsCollection, _ ByVal newSelectedCells As PivotSelectedCellsCollection _ )
protected internal virtual void OnSelectedCellsCollectionChanged( PivotSelectedCellsCollection previouslySelectedCells, PivotSelectedCellsCollection newSelectedCells )