◆TreeView对节点添加修改删除操作◆

Question

求一TreeView,对节点进行 添加，修改，删除，移动操作的详细代码。谢谢！

Answer 1

      //右键选取
      private void treeMailView_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                TreeNode tn = treeMailView.GetNodeAt(e.X, e.Y);
                if (tn != null)
                {
                    treeMailView.SelectedNode = tn;
                }
            }
            if (e.Button == MouseButtons.Left)
            {
                TreeNode tn = treeMailView.GetNodeAt(e.X, e.Y);
                if (tn != null)
                {
                    Tn = tn;
                }
            }
        }
//拖拽
        private Point Position = new Point(0, 0);
        private void treeFileView_ItemDrag(object sender, ItemDragEventArgs e)
        {
            DoDragDrop(e.Item, DragDropEffects.Move); 
        }        private void treeFileView_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(typeof(TreeNode)))
            {
                e.Effect = DragDropEffects.Move;
            }
            else
                e.Effect = DragDropEffects.None;        }        string filePath = Application.StartupPath.ToString() + "\\MyFiles\\";
        private void treeFileView_DragDrop(object sender, DragEventArgs e)
        {
            TreeNode myNode = null;
            if (e.Data.GetDataPresent(typeof(TreeNode)))
            {
                myNode = (TreeNode)(e.Data.GetData(typeof(TreeNode)));
            }
            else
            {
                MessageBox.Show("error");
            }            Position.X = e.X;
            Position.Y = e.Y;
            Position = treeFileView.PointToClient(Position);
            TreeNode DropNode = treeFileView.GetNodeAt(Position);
            if (DropNode.Parent == myNode || DropNode == myNode)
            {            }
            else if (DirAndFileOperator.IsFile(DropNode))
            {
            
            }
            else
            {
                //DirAndFileOperator.MoveFolder(filePath + myNode.FullPath, filePath + DropNode.FullPath + @"\" + myNode.Name);
                TreeNode DragNode = myNode;
                myNode.Remove();
                DropNode.Nodes.Add(DragNode);
            }
            treeFileView.SelectedNode = DropNode;
            DropNode.Expand();
        }        private void treeFileView_DragOver(object sender, DragEventArgs e)
        {
            TreeNode myNode = null;
            if (e.Data.GetDataPresent(typeof(TreeNode)))
            {
                e.Effect = DragDropEffects.Move;
                myNode = (TreeNode)(e.Data.GetData(typeof(TreeNode)));
            }
            else
                e.Effect = DragDropEffects.None;
            Position.X = e.X;
            Position.Y = e.Y;
            Position = treeFileView.PointToClient(Position);
            TreeNode DropNode = treeFileView.GetNodeAt(Position);
            treeFileView.SelectedNode = DropNode;
        }

Answer 2

http://www.componentart.com/webui/demos/demos_control-specific/treeview/programming_client/add_removeDisable/WebForm1.aspx

Answer 3

Default.aspx.cs文件:
using System.Xml;
public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        XmlDocument doc = new XmlDocument();
        doc.Load(Server.MapPath("data.xml"));
        XmlNode node = doc.DocumentElement;
        InitTree ( this.TreeView1.Nodes, node );
    }    private void InitTree ( TreeNodeCollection nodes, XmlNode node )
    {
        XmlNodeList nodeList = node.ChildNodes;
        foreach ( XmlNode subNode in nodeList )
        {
            TreeNode tmpNode = new TreeNode ();
            tmpNode.Text = ((XmlElement)subNode).GetAttribute("name");
            tmpNode.NavigateUrl = ((XmlElement)subNode).GetAttribute("url");
            nodes.Add ( tmpNode );
            InitTree ( tmpNode.ChildNodes, subNode );
        }
    }
}data.xml文件:
<?xml version="1.0" encoding="utf-8"?>
<root>
  <baidu name="Baidu" url="http://www.baidu.com">
    <hao name="Hao" url="http://www.hao123.com">
      <wangyi name="Wangyi" url="http://www.163.com">
      </wangyi>
    </hao>
    <sina name="Sina" url="http://www.sina.com.cn">
      <qq name="QQ" url="http://www.qq.com">
      </qq>
    </sina>
  </baidu>
</root>