C#winform投屏access版

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 System.Data.OleDb;

namespace 圣经投屏
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string juan = textBox1.Text;
            string zhang = numericUpDown1.Text;
            string start = numericUpDown2.Text;
            string end = numericUpDown3.Text;
            try
            {
                int izhang = Convert.ToInt32(zhang);
                int istart = Convert.ToInt32(start