internal DataGridVirtualizingCollectionViewGroupRoot(DataGridVirtualizingCollectionView collectionView, bool isBottomLevel) : base(null, -1, 0, null, -1, isBottomLevel) { m_parentCollectionView = collectionView; m_virtualPageManager = new DataGridPageManager(collectionView); }
internal DataGridVirtualizingCollectionViewGroupRoot( DataGridVirtualizingCollectionView collectionView, bool isBottomLevel ) : base( null, -1, 0, null, -1, isBottomLevel ) { m_parentCollectionView = collectionView; m_virtualPageManager = new DataGridPageManager( collectionView ); }