(1)示例图片

具体实现：

一、

using DevExpress.XtraNavBar;

二、

从窗体上拖一个 NavBarControl 控件 命名为：nbcLeft

三、窗体OnLoad 事件

  private void FrmLeftMenu_Load(object sender, EventArgs e)

        {

            DataTable dt=stu.GetMain().Tables[0];

            CreateGroup(dt, "MainName", "ChildName",nbcLeft);

        }

NavBarControl 调用方法：

 /// <summary>

        /// NavBarControl 数据填充

        /// </summary>

        /// <param name="dt">含有主菜单(子菜单)的表</param>

        /// <param name="mainColumnsName">主菜单名称</param>

        /// <param name="childColumnsName">子菜单名称</param>

        /// <param name="nbc">NavBarControl 控件名称</param>

        private void CreateGroup(DataTable dt,string mainColumnsName,string childColumnsName,NavBarControl nbc) {

            //创建之前，清空navbargroup

            nbcLeft.Groups.Clear();

            //过滤重复记录

            DataTable dt1 = dt.DefaultView.ToTable(true, mainColumnsName);

            if (dt1.Rows.Count < 1) {

                return;

            }

            DataRow[] drs = dt1.Select();

            int i = 0;//

            foreach (DataRow dr in drs) {

                i++;

                //添加 navbargoup

                DevExpress.XtraNavBar.NavBarGroup nbg = new NavBarGroup();

                nbg.Caption = dr[0].ToString();

                nbg.GroupClientHeight = 60;

                nbc.Groups.Add(nbg);

                //添加子项

                //根据主菜单项名称 获取所属的所有子项

                string abc=mainColumnsName +"='"+ nbg.Caption+"'";

                DataRow[] drsChild = dt.Select(abc);

                if (drsChild.Length < 1) {

                    continue;

                }

                CreateGroupChild(drsChild,nbg,childColumnsName);

                //加载时，第一个是展开的

                if (i == 1) {

                    nbg.Expanded = true;

                }

            }

        }

        /// <summary>

        /// 添加子项

        /// </summary>

        /// <param name="drs">子菜单表</param>

        /// <param name="nbg">NavBarGroup 主菜单项</param>

        private void CreateGroupChild(DataRow[] drs, DevExpress.XtraNavBar.NavBarGroup nbg,string childColumnsName) {

            foreach (DataRow dr in drs) {

                //给子项赋值

                DevExpress.XtraNavBar.NavBarItem nbi = new NavBarItem();

                nbi.Caption = dr[childColumnsName].ToString();      

                //nbi.Appearance.BackColor = Color.Yellow;

                ////子菜单图片

                //nbi.SmallImage=new Bitmap(@"C:\Users\Thinkpad\Pictures\美图\psu.jpg");

                nbg.ItemLinks.Add(nbi);

                nbi.LinkClicked += new DevExpress.XtraNavBar.NavBarLinkEventHandler(Nbi_LinkClicked);

            }

        }

        //单击事件

        private void Nbi_LinkClicked(object sender, DevExpress.XtraNavBar.NavBarLinkEventArgs e) {

              //点击子项，执行.....

        }

说明：数据表举例：