c# treeview节点拖动（C# treeview控件使用详解）

本文实例讲述了C#实现TreeView节点拖拽的方法。分享给大家供大家参考。具体如下：

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 public Form1(){InitializeComponent();treeView1.AllowDrop = true;treeView1.ItemDrag += new ItemDragEventHandler(treeView1_ItemDrag);treeView1.DragEnter += new DragEventHandler(treeView1_DragEnter);treeView1.DragDrop += new DragEventHandler(treeView1_DragDrop);}void treeView1_DragDrop(object sender, DragEventArgs e){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.treeView1.GetNodeAt(pt);//如果目标节点无子节点则添加为同级节点,反之添加到下级节点的未端TreeNode NewMoveNode = (TreeNode)moveNode.Clone();if (targeNode.Nodes.Count == 0){targeNode.Parent.Nodes.Insert(targeNode.Index, NewMoveNode);}else{targeNode.Nodes.Insert(targeNode.Nodes.Count, NewMoveNode);}//更新当前拖动的节点选择treeView1.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();}void treeView1_DragEnter(object sender, DragEventArgs e){if (e.Data.GetDataPresent("System.Windows.Forms.TreeNode")){e.Effect = DragDropEffects.Move;}else{e.Effect = DragDropEffects.None;}}void treeView1_ItemDrag(object sender, ItemDragEventArgs e){if (e.Button == MouseButtons.Left){DoDragDrop(e.Item, DragDropEffects.Move);}}