private void RemoveItem2()
        {
            int itemLength = itemPanel.Controls.Count;

            for (int i = 0; i < itemLength; i++)
            {
                Item_ShowDataItems data = (Item_ShowDataItems)itemPanel.Controls[i];

                if (data.Pointer > _pointer)
                {
                    data.Pointer--;
                }
            }

            itemPanel.Controls.RemoveAt(_pointer + 1);
            rootItem.dataCollection.Data.RemoveAt(_pointer);
            ReOrder();
            childItem.ReDrawBoders();
        }