从数据库中读取数据创建菜单

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace WindowsForm
...{
    public partial class Form1 : Form
    ...{
        private MenuStrip mainmenu = new MenuStrip();
        private ToolStripMenuItem file, file1;
        private Panel p = new Panel();

        public Form1()
        ...{
            InitializeComponent();
        }
        private void Form2_Load(object sender, EventArgs e)
        ...{
            try
            ...{
                create();
                doits doits = new doits();
                doits.Dock = System.Windows.Forms.DockStyle.Fill;
                p.Controls.Clear();
                p.Controls.Add(doits);
            }
            catch (Exception Err)
            ...{
                MessageBox.Show(Err.Message);
            }
        }
        private void create()
        ...{
            DataSet ds = new DataSet();
            DataSet ds1 = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter("select * from Menu  where MenuFatherName='null'", "server=.;uid=sa;pwd=;database=Data");
            da.Fill(ds);
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            ...{
                file = new ToolStripMenuItem();
                file.Name = ds.Tables[0].Rows[i]["MenuName"].ToString();
                file.Text = ds.Tables[0].Rows[i]["MenuText"].ToString();
                ds1.Clear();
                SqlDataAdapter da1 = new SqlDataAdapter("select * from Menu where MenuFatherName='" + file.Name + "'", "server=.;uid=sa;pwd=;database=Data");
                da1.Fill(ds1);
                for (int j = 0; j < ds1.Tables[0].Rows.Count; j++)
                ...{
                    file1 = new ToolStripMenuItem();
                    file1.ToolTipText = ds1.Tables[0].Rows[j]["ID"].ToString();
                    file1.Name = ds1.Tables[0].Rows[j]["MenuName"].ToString();
                    file1.Text = ds1.Tables[0].Rows[j]["MenuText"].ToString();
                    file1.Click += new EventHandler(doit);
                    file.DropDownItems.Add(file1);
                }
                mainmenu.Items.Add(file);
            }

            file = new ToolStripMenuItem();
            file.Name = "帮助";
            file.Text = "帮助(&H)";
            mainmenu.Items.Add(file);

            this.Controls.Add(mainmenu);
            this.MainMenuStrip = mainmenu;

            p.Dock = System.Windows.Forms.DockStyle.Fill;
            this.Controls.Add(p);
        }
        private void doit(object sender, EventArgs e)
        ...{
            doits doits = new doits();
            doits.Dock = System.Windows.Forms.DockStyle.Fill;
            ToolStripMenuItem items = (ToolStripMenuItem)sender;
            doits.StringName = items.ToolTipText;
            this.Text = "XXXXXXXXXXXXX(程序)--"+items.Text;
            p.Controls.Clear();
            p.Controls.Add(doits);
        }
    }
}