default.aspx.cs

来自「这是.net2005学习不可缺少的教程」· CS 代码 · 共 49 行

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BuildTree();
        }
    }

    private void BuildTree()
    {
        string[] dotnetBooks = new string[] {".NET技术新手入门", "高级C#编程"};
        string[] javaBooks = new string[] {"Eclipse"};

        TreeNode computerbookNode = new TreeNode("计算机图书");
        this.TreeView1.Nodes.Add(computerbookNode);

        TreeNode dotnetNode = new TreeNode(".NET类");
        computerbookNode.ChildNodes.Add(dotnetNode);

        for (int i = 0; i < dotnetBooks.Length; i++)
        {
            TreeNode node = new TreeNode();
            node.Text = dotnetBooks[i];
            dotnetNode.ChildNodes.Add(node);
        }

        TreeNode javaNode = new TreeNode("Java类");
        computerbookNode.ChildNodes.Add(javaNode);

        javaNode.ChildNodes.Add(new TreeNode(javaBooks[0]));
    }
    protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        this.Label1.Text = "被选中的节点是：" + this.TreeView1.SelectedNode.Text;
    }
}