C# treeview拖动结点操作

 
   

  
    
private void TVdepartment_ItemDrag(object sender, ItemDragEventArgs e)//左键拖动  
  
    
        {  
  
    
            if (e.Button == MouseButtons.Left)  
  
    
            {  
  
    
                DoDragDrop(e.Item, DragDropEffects.Move);   
  
    
            }  

  
    
        }  
  
    
 
  
    
        private void TVdepartment_DragEnter(object sender, DragEventArgs e)  
  
    
        {  
  
    
            if (e.Data.GetDataPresent("System.Windows.Forms.TreeNode"))  
  
    
            {  
  
    
                e.Effect = DragDropEffects.Move;  
  
    
            }  
  
    
            else 
  
    
            {  
  
    
                e.Effect = DragDropEffects.None;  
  
    
            }  
  
    
        }  
  
    
 
  
    
    private void TVdepartment_DragDrop(object sender, DragEventArgs e)//拖动  
  
    
        {    //获得拖放中的节点  
  
    
            TreeNode moveNode = (TreeNode)e.Data.GetData("System.Windows.Forms.TreeNode");  
  
    
            //根据鼠标坐标确定要移动到的目标节点  
  
    
            Point pt;  
  
    
            TreeNode targeNode;  
  
    
            pt = ((TreeView)(sender)).PointToClient(new Point(e.X, e.Y));  
  
    
            targeNode = this.TVdepartment.GetNodeAt(pt);  
  
    
            //添加结点
  
    
            TreeNode NewMoveNode = (TreeNode)moveNode.Clone();  
  
    

  
    
　　　　　　targeNode.Nodes.Insert(targeNode.Nodes.Count, NewMoveNode);  

  
    
  
  
    
            //更新当前拖动的节点选择  
  
    
            TVdepartment.SelectedNode = NewMoveNode;  
  
    
            //展开目标节点,便于显示拖放效果  
  
    
            targeNode.Expand();  
  
    
 
  
    
            //移除拖放的节点  
  
    
            moveNode.Remove();  
  
    
        } 

 
   
　　注意：别忘记把TreeView控件的AllowDrop属性设为true