OA系统

开发平台：
ASP/ASPX

sys_left_menu.aspx.cs：源码内容
							﻿using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Data.SqlClient;
public partial class web_sys_left_menu : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["user_id"] == null)
        {
            Response.Write("<script>window.open('login.aspx','_top');</script>");
        }
        if (!IsPostBack)
        {
            if (Session["user_id"] != null)
            {
                BindTree();
            }
        }
    }
    public void BindTree()
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["oaconnection"].ConnectionString);
        SqlDataAdapter sda = new SqlDataAdapter("select a.id,name,menu_url,parent_id,target,is_open,is_dir from oa_sys_child_menu as a left join oa_user_group_detail as b on a.id=b.menu_id left join oa_employee as c on b.main_id=c.user_group where a.id=22 and c.id=" + Session["user_id"], con);
        DataSet ds = new DataSet();
        sda.Fill(ds, "1");
        TreeNode parentnode;
        TreeNode childnode;
        TreeNode townnode;
        TreeNode townnode1;
        //TreeView1.ShowLines = true;
        foreach (DataRow parentrow in ds.Tables["1"].Rows)
        {
            //绑定第一层节点
            parentnode = new TreeNode(parentrow["name"].ToString(), parentrow["id"].ToString(), "../Images/tree/folder.gif");
            //运行时候先不展开子节点
            parentnode.Expanded = true;
            parentnode.NavigateUrl = (parentrow["menu_url"]).ToString();
            parentnode.Target = (parentrow["target"]).ToString();
            TreeView1.Nodes.Add(parentnode);
            SqlDataAdapter adapter = new SqlDataAdapter("select a.id,name,menu_url,parent_id,target,is_open,is_dir from oa_sys_child_menu as a left join oa_user_group_detail as b on a.id=b.menu_id left join oa_employee as c on b.main_id=c.user_group where parent_id =" + parentrow["id"].ToString() + "and c.id=" + Session["user_id"], con);
            adapter.Fill(ds, "2");
            if (ds.Tables["2"].Rows.Count > 0)
            {
                //绑定第二层节点
                foreach (DataRow childrow in ds.Tables["2"].Rows)
                {
                    childnode = new TreeNode(childrow["name"].ToString(), childrow["id"].ToString(), "../Images/tree/folder.gif");
                    parentnode.ChildNodes.Add(childnode);
                    SqlDataAdapter adapter2 = new SqlDataAdapter("select a.id,name,menu_url,parent_id,target,is_open,is_dir from oa_sys_child_menu as a left join oa_user_group_detail as b on a.id=b.menu_id left join oa_employee as c on b.main_id=c.user_group where parent_id=" + childrow["id"].ToString() + "and c.id=" + Session["user_id"], con);
                    adapter2.Fill(ds, "3");
                    childnode.Expanded = false;
                    childnode.NavigateUrl = childrow["menu_url"].ToString();
                    childnode.Target = childrow["target"].ToString();
                    if (ds.Tables["3"].Rows.Count > 0)
                    {
                        //绑定第三层节点
                        foreach (DataRow townrow in ds.Tables["3"].Rows)
                        {
                            townnode = new TreeNode(townrow["name"].ToString(), townrow["id"].ToString(), "../Images/tree/folder.gif");
                            SqlDataAdapter adapter3 = new SqlDataAdapter("select a.id,name,menu_url,parent_id,target,is_open,is_dir from oa_sys_child_menu as a left join oa_user_group_detail as b on a.id=b.menu_id left join oa_employee as c on b.main_id=c.user_group where parent_id=" + townrow["id"].ToString() + "and c.id=" + Session["user_id"], con);
                            adapter3.Fill(ds, "4");
                            townnode.Expanded = false;
                            childnode.ChildNodes.Add(townnode);
                            townnode.NavigateUrl = (townrow["menu_url"]).ToString();
                            townnode.Target = (townrow["target"]).ToString();
                            if (ds.Tables["4"].Rows.Count > 0)
                            {
                                foreach (DataRow townrow1 in ds.Tables["4"].Rows)
                                {
                                    townnode1 = new TreeNode(townrow1["name"].ToString(), townrow1["id"].ToString(), "../Images/tree/folder.gif");
                                    townnode.ChildNodes.Add(townnode1);
                                    townnode1.NavigateUrl = (townrow1["menu_url"]).ToString();
                                    townnode1.Target = (townrow1["target"]).ToString();
                                }
                                ds.Tables["4"].Clear();
                            }
                        } ds.Tables["3"].Clear();
                    }
                }
                ds.Tables["2"].Clear();
            }
        }
        con.Close();
    }
}

						