使用C#创建动态左菜单及MDI主窗口实践代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using DevExpress.XtraNavBar;

namespace FXJTEST
{
    public partial class frmMAIN : Form
    {
        public frmMAIN()
        {
            InitializeComponent();
            AddLeftMarItem();
            this.xtraTabbedMdiManager1.ClosePageButtonShowMode = DevExpress.XtraTab.ClosePageButtonShowMode.InAllTabPagesAndTabControlHeader;//设置标签后面添加删除按钮 ,  多个标签只需要设置一次..
        }

        private void AddLeftMarItem()
        {
            int c = 0;
            for (int i = 0; i < menuStrip1.Items.Count; i++)
            {

                ToolStripMenuItem item = (ToolStripMenuItem)menuStrip1.Items[i];
                if (item.DropDownItems.Count > 0)

                {
                    c++;
                    NavBarGroup nbGroup1 = new NavBarGroup();
                    nbGroup1.Name = "nbGroup" + c.ToString();
                    nbGroup1.Caption = menuStrip1.Items[i].Text;
                    nbGroup1.SmallImageIndex = -1;
                    nbGroup1.LargeImageIndex = -1;
                    nbGroup1.GroupStyle = NavBarGroupStyle.LargeIconsText;


                    //添加到导航栏所有分组集合
                    navBarControl1.Groups.Add(nbGroup1);//根据主菜单增加组
                    for (int j = 0; j < item.DropDownItems.Count; j++)//增加组下面的项
                    {
                        ToolStripMenuItem subItem = new ToolStripMenuItem();
                        subItem = (ToolStripMenuItem)item.DropDownItems[j];
                        AddSubItem(subItem, nbGroup1);
                    }
                }
            }
        }

        private void AddSubItem(ToolStripMenuItem subItem, NavBarGroup nbGroup1)//用递归的方法来不限层级的根据菜单项来生成左窗口菜子菜单项
        {
            int d = 0;
            if (subItem.DropDownItems .Count ==0)//判断是不是末端菜单项
            {
                d++;
                NavBarItem nbItem = new NavBarItem();
                nbItem.Name = "nbItem" + d.ToString(); ;