'宣言 Protected Overridable Function CreateInstance( _ ByVal positionItem As IHierarchicalPositionItem(Of TKey,TSortKey), _ ByVal index As Integer, _ ByVal memberIndex As Integer, _ ByVal positionSize As Integer _ ) As PositionItemInfo(Of TKey,TSortKey)
protected virtual PositionItemInfo<TKey,TSortKey> CreateInstance( IHierarchicalPositionItem<TKey,TSortKey> positionItem, int index, int memberIndex, int positionSize )