本文實例講述了C#實現TreeView節點拖拽的方法。分享給大家供大家參考。具體如下：
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"); //根據鼠標坐標確定要移動到的目標節點 Point pt; TreeNode targeNode; pt = ((TreeView)(sender)).PointToClient(new Point(e.X, e.Y)); targeNode = this.treeView1.GetNodeAt(pt); //如果目標節點無子節點則添加為同級節點,反之添加到下級節點的未端 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); } //更新當前拖動的節點選擇 treeView1.SelectedNode = NewMoveNode; //展開目標節點,便于顯示拖放效果 targeNode.Expand(); //移除拖放的節點 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); }}希望本文所述對大家的C#程序設計有所幫助。
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