Question

C#Treeview哪些属性可以保存值？

除了Tag可以动态储存值外，还有其它属性可以动态存储节点值么？

Answer 1

可以自己扩展属性来保存值。

using System;
using System.Windows.Forms;

namespace test1{
public partial class TreeviewEx : Form {
public TreeviewEx() {
InitializeComponent();
}

/// <summary>
/// 扩展TreeNode，增加需要的属性
/// </summary>
class MyTreeNode: TreeNode {
public string UserName { get; set; }
}

private void button1_Click(object sender, EventArgs e) {
for (int i = 0; i < 10; i++) {
MyTreeNode node = new MyTreeNode();
node.Text = string.Format("Node {0}", i);
node.UserName = string.Format("Name {0}", i + 100);
treeView1.Nodes.Add(node);
}
}

private void treeView1_DoubleClick(object sender, EventArgs e) {
if (treeView1.SelectedNode != null) {
MyTreeNode node = (MyTreeNode)treeView1.SelectedNode;
MessageBox.Show(node.UserName);
}
}
}
}

Answer 2

查 MSDN 就知道了

能存 object 的也就是 tag 了