1 先上效果圖

treeview導(dǎo)航樹

導(dǎo)航樹徒矗靠在MDI窗體的左邊，可拖動(dòng)改變大小集峦，打開的窗口在【窗口】菜單下有列表伏社。
VS2010實(shí)現(xiàn)這個(gè)其實(shí)很簡單，走了不少彎路塔淤，我直接上最簡單的方案

2 先創(chuàng)建一個(gè)MDIForm

窗體的 isMdiContainer = true

3 窗體上放一個(gè)MenuStrip菜單 name = menuMDI

一級(jí)菜單 輸入 【開始】name = startMenu摘昌、【窗口】 name = windowsMenuItem兩項(xiàng)
【開始】項(xiàng)下增加【新建】name = newMenuItem【-】、 【退出】name=exitMenuItem
【窗口】項(xiàng)下增加【導(dǎo)航樹】name = treeMenuItem

4 MDIForm窗體內(nèi)放置一個(gè)TreeView控件treeView1,

其中 Dock = left
靠近treeView1再放置一個(gè)Splitter控件splitter1,不用任何代碼就能拖動(dòng)改變treeview的寬度高蜂。

5 Treeview控件的使用百度或自己腦補(bǔ)

以上設(shè)置和布局基本實(shí)現(xiàn)導(dǎo)航樹 功能聪黎。

6 核心代碼

6.1新建測試窗體

private void newMenuItem_Click(object sender, EventArgs e)
        {
            Form f = new Form();
            ll = ll + 11;
            f.Name = ll.ToString();
            f.Text = f.Name;
            f.MdiParent = this;

            f.Show();
        }

6.2 退出程序

private void exitMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

6.3 導(dǎo)航樹開關(guān)

private void treeMenuItem_Click(object sender, EventArgs e)
        {
            if (treeView1.Visible)
            {
                treeView1.Visible = false;
                treeMenuItem.Checked = false;
            }
            else {
                treeView1.Visible = true;
                treeMenuItem.Checked = true;
            }
        }

7 全部代碼

using System;
using System.Windows.Forms;
using System.Reflection;
using AppUI.SDI;
using System.Data;
using BLL;

namespace AppUI
{
    public partial class MDIForm : Form
    {
        public MDIForm()
        {
            InitializeComponent();
        }

        //全部菜單項(xiàng)
        DataTable dt = null;

        private void MDIForm_Load(object sender, EventArgs e)
        {
            dt = BLLsysMemu.Select();

            //創(chuàng)建treeview根節(jié)點(diǎn)
            TreeNode tn0 = treeView1.Nodes.Add("我的導(dǎo)航");
            tn0.ImageIndex = 0;
            tn0.SelectedImageIndex = 0;

            //TreeNode tn1 = new TreeNode("基礎(chǔ)數(shù)據(jù)");
            //tn1.Tag = "1000";
            //TreeNode tn2 = new TreeNode("業(yè)務(wù)數(shù)據(jù)");
            //tn2.Tag = "2000";
            //TreeNode tn3 = new TreeNode("系統(tǒng)管理");
            //tn3.Tag = "9000";


            //tn0.Nodes.Add(tn1);
            //tn0.Nodes.Add(tn2);
            //tn0.Nodes.Add(tn3);
            TreeNode tn1 = null;

            for (int r = 0; r < dt.Rows.Count; r++ )
            {
                string name, pid;
                pid = dt.Rows[r]["menu_id"].ToString();
                name = dt.Rows[r]["menu_name"].ToString();
                
                if (pid.Substring(1) == "000") {
                    tn1 = new TreeNode(name);
                    tn1.ImageIndex = 1;
                    tn1.SelectedImageIndex = 2;
                    tn0.Nodes.Add(tn1);
                }
                else{
                TreeNode tn2 = new TreeNode(name);
                tn2.Tag = pid;
                tn2.ImageIndex = 3;
                tn2.SelectedImageIndex = 4;
                tn1.Nodes.Add(tn2);
                }
                
            }

            treeView1.ExpandAll();
        }

        
        private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            string formName = ""; //要打開的窗體:命名空間.類名
            TreeNode tn = e.Node;

            string tag = (string)tn.Tag;                     

            if (string.IsNullOrEmpty(tag)) return;

            //if (tag == "1000") formName = "JIC";
            //else if (tag == "2000") formName = "YEW";
            //else if (tag == "9000") formName = "XIT";
            //else return;

            Assembly assembly = Assembly.GetExecutingAssembly();
            // 實(shí)例化窗體
            //formName = "AppUI.SDI." + formName;
            formName = dt.Select("menu_id = '" + tag + "'")[0]["s_form"].ToString();

            Form form = assembly.CreateInstance(formName) as Form;
            string ftext = dt.Select("menu_id = '" + tag + "'")[0]["menu_name"].ToString();
            form.Text = tag + ftext;

            ShowForm(form);
        }

        private void ShowForm(Form sdi) //在pane2里打開窗體
        {
            //this.splitContainer1.Panel2.Controls.Clear();
            
            //sdi.FormBorderStyle = FormBorderStyle.FixedDialog;
            sdi.FormBorderStyle = FormBorderStyle.None;
            sdi.FormBorderStyle = FormBorderStyle.SizableToolWindow;
            sdi.Dock = DockStyle.Fill;
            sdi.TopLevel = false;
            //sdi.Parent = this.splitContainer1.Panel2;
            //this.splitContainer1.Panel2.Controls.Add(sdi);
            sdi.BringToFront();
            sdi.Show();
        }

        private void MDIForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            Application.Exit();
        }
        long ll = 0;
        private void newMenuItem_Click(object sender, EventArgs e)
        {
            Form f = new Form();
            ll = ll + 11;
            f.Name = ll.ToString();
            f.Text = f.Name;
            f.MdiParent = this;

            f.Show();
        }

        private void treeMenuItem_Click(object sender, EventArgs e)
        {
            if (treeView1.Visible)
            {
                treeView1.Visible = false;
                treeMenuItem.Checked = false;
            }
            else {
                treeView1.Visible = true;
                treeMenuItem.Checked = true;
            }
        }

        private void exitMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}