ASP.NET

效果：

使用母板页进行，左右页面进行跳转。

绑定TreeView控件：http://www.cnblogs.com/KTblog/p/4792302.html

主要功能：

• 点击节点的时候，只操作最后一级的节点，其他节点跳过不执行代码。

代码：

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI.WebControls;

namespace APManage
{
    public partial class TreeView : System.Web.UI.Page
    {
        public string ConnString = @"server = HUANGFU-PC; database = DB_APManage; integrated security = true";
        public DataTable dt = null;
        public List<int> erjinode = new List<int>(); //存储非最后一级的节点

        /// <summary>
        /// 初始化事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                dt = new DataTable();
               
                GetMenuToDataTable("select * from Tb_APCategory", dt);
                BindTree(dt, null, "1000");
            }
        }   

        /// <summary>
        /// 选择存储所有的非最后一级节点的ID
        /// </summary>
        public void SelectIsNotMainNode()
        {
            SqlConnection con = new SqlConnection(ConnString);
            con.Open();
            SqlCommand cmd = new SqlCommand("select ID from Tb_APCategory where ParentID = 1000", con);
            SqlDataReader sdr = cmd.ExecuteReader();
            while (sdr.Read())
            {
                SqlConnection con_2 = new SqlConnection(ConnString);
                con_2.Open();
                SqlCommand cmd_2 = new SqlCommand("select ID from Tb_APCategory where ParentID = " + sdr["ID"].ToString() + "", con_2);
                SqlDataReader sdr_2 = cmd_2.ExecuteReader();
                while (sdr_2.Read())
                {
                    erjinode.Add(Convert.ToInt32(sdr_2["ID"].ToString()));
                }
                erjinode.Add(Convert.ToInt32(sdr["ID"].ToString()));
            }
        }

        /// <summary>
        /// 鼠标点击节点事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
        {
            string node = this.TreeView1.SelectedNode.Value;//获得所选择节点的值，也就是表中的ID
            SelectIsNotMainNode();
            foreach (int item in erjinode)
            {
                if (node == item.ToString())
                {
                    ClientScript.RegisterStartupScript(this.GetType(), "msg", "<script>alert('不是最后一个节点！')</script>");
                    return;
                }
            }
            ClientScript.RegisterStartupScript(this.GetType(), "msg", "<script>alert('"+node+"！')</script>");
        }

        #region 绑定TreeView控件

        /// <summary>
        /// 循环绑定TreView
        /// </summary>
        /// <param name="dtSource"></param>
        /// <param name="parentNode"></param>
        /// <param name="parentID"></param>
        private void BindTree(DataTable dtSource, TreeNode parentNode, string parentID)
        {
            DataRow[] rows = dtSource.Select(string.Format("ParentID={0}", parentID));
            foreach (DataRow row in rows)
            {
                TreeNode node = new TreeNode();
                node.Text = row["CategoryName"].ToString();
                node.Value = row["ID"].ToString();
                BindTree(dtSource, node, row["ID"].ToString());
                if (parentNode == null)
                {
                    this.TreeView1.Nodes.Add(node);
                }
                else
                {
                    parentNode.ChildNodes.Add(node);
                }
            }
        }

        /// <summary>
        /// 绑定DataTable
        /// </summary>
        /// <param name="query"></param>
        /// <param name="dt"></param>
        /// <returns></returns>
        private DataTable GetMenuToDataTable(string query, DataTable dt)
        {
            using (SqlConnection conn = new SqlConnection(ConnString))
            {
                SqlCommand cmd = new SqlCommand(query, conn);
                SqlDataAdapter ada = new SqlDataAdapter(cmd);
                ada.Fill(dt);
            }
            return dt;
        }

        #endregion
    }
}