[C#] TreeNode Merge

        private vTreeNode DoMerge(vTreeNode source, vTreeNode target)
        {
            if (source == null || target == null) return null;
            foreach (vTreeNode n in source.Nodes)
            {
                // see if there is a match in target
                vTreeNode match = FindNode(n, target.Nodes); // match paths
                if (match == null)
                { // no match was found so add n to the target
                    target.Nodes.Add(n);
                }
                else
                {
                    // a match was found so add the children of match 
                    DoMerge(n, match);
                }
            }
            return target;
        }

        private vTreeNode FindNode(vTreeNode source, vTreeNodeCollection nodes)
        {
            foreach (vTreeNode node in nodes)
            {
                if (node.TooltipText == source.TooltipText)
                    return node;
            }
            return null;
        }

參考資料: https://stackoverflow.com/questions/866380/merging-treenodes?answertab=active#tab-top