FairyGUI.TreeView.GetInsertIndexForNode C# (CSharp) Method

        int GetInsertIndexForNode(TreeNode node)
        {
            TreeNode prevNode = node.GetPrevSibling();
            if (prevNode == null)
                prevNode = node.parent;
            int insertIndex = list.GetChildIndex(prevNode.cell) + 1;
            int myLevel = node.level;
            int cnt = list.numChildren;
            for (int i = insertIndex; i < cnt; i++)
            {
                TreeNode testNode = (TreeNode)list.GetChildAt(i).data;
                if (testNode.level <= myLevel)
                    break;

                insertIndex++;
            }

            return insertIndex;
        }