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先获取选中的节点，再处理将节点拖入另一个XtratreeList时的OnDragDrop方法。

关键代码：

private void OnDragEnter(object sender, DragEventArgs e)

        {

            TreeList list = (TreeList)sender;

            TreeListNode node = GetDragNode(e.Data);

            if (node != null && node.TreeList != list)

                e.Effect = DragDropEffects.Copy;

        }

        private void OnDragDrop(object sender, DragEventArgs e)

        {

            TreeListNode node = GetDragNode(e.Data);

            if (node == null) return;

            TreeList list = (TreeList)sender;

            if (list == node.TreeList) return;

            TreeListHitInfo info = list.CalcHitInfo(list.PointToClient(new Point(e.X, e.Y)));

            InsertBrunch(list, node, info.Node == null ? -1 : info.Node.Id);

        }

        private void InsertBrunch(TreeList list, TreeListNode node, int parent) {

            ArrayList data = new ArrayList();

            foreach (TreeListColumn column in node.TreeList.Columns)

                data.Add(node[column]);

            parent = list.AppendNode(data.ToArray(), parent).Id;

            //如果拖拽节点有子节点，将子节点也一起拖入

            if (node.HasChildren)

                foreach (TreeListNode n in node.Nodes)

                    InsertBrunch(list, n, parent);

        }

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