C# Winform节点拖拽

需求：支持ListView节点拖拽至TreeView，TreeView节点拖拽至ListView，TreeView节点拖拽至TreeView

实现方案：需以下三个事件联合使用
1.源控件的ItemDrag事件
2.目标控件的DragEnter事件
3.目标控件的DragDrop事件

 #region ListView节点拖拽至TreeView
        private void TlvDwgInfos_ItemDrag(object sender, ItemDragEventArgs e)
        {
   
            //判断是否是鼠标右键按动
            if (e.Button == MouseButtons.Left)
            {
   
                OneKeyForm.DoDragDrop(OneKeyForm.tlvDwgInfos.CheckedItems, DragDropEffects.Move);
            }
        }
        private void MstvPrjInfos_DragEnter(object sender, DragEventArgs e)
        {
   
            if (e.Data.GetDataPresent(typeof(CheckedListViewItemCollection))
                || e.Data.GetDataPresent(typeof(List<TreeNode>)))
            {
   
                e.Effect = DragDropEffects.Move;
            }
            else
            {
   
                e.Effect = DragDropEffects.None;
            }
        }
        private void MstvPrjInfos_DragDrop(object sender, DragEventArgs e)
        {
   
            //if (TreeNodeLst.Count > 0 && SelectedNode != OneKeyForm.mstvPrjInfos.SelectedNode)
            //{
   
            //    TreeNodeLst.ForEach(n => n.Remove());
            //    TreeNodeLst.Clear();
            //    SelectedNode.ImageIndex = 0;
            //    SelectedNode.SelectedImageIndex = 0;
            //}
            //根据鼠标坐标确定要移动到的目标节点
            Point pt = ((TreeView)(sender)).PointToClient(new Point(e.X, e.Y));
            SelectedNode = OneKeyForm.mstvPrjInfos.GetNodeAt(pt);
            if (SelectedNode != null)
            {
   
                ProjectFolderDTO folderDTO = SelectedNode.Tag as ProjectFolderDTO;
                if (folderDTO != null)
                {
   
                    if (e.Data.GetDataPresent(typeof(CheckedListViewItemCollection)))
                    {
   
                        CheckedListViewItemCollection checkedlvItemColl = (CheckedListViewItemCollection