c# 连接 access 方法

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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 ;
using System.Data.OleDb ;

namespace AccessDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
         //连接指定的Access数据库
        String ConnString ="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=MyMDB.mdb";
        //SQL语句
        String SQLString = "SELECT * FROM TestDB";
        //创建一个OleDbConnection对象
        System.Data.OleDb.OleDbConnection OleDBConn1 =new System.Data.OleDb.OleDbConnection(ConnString);
        // 创建一个DataSet对象
         DataSet DataSet1=new DataSet();
        // 创建一个OleDbDataAdapter对象
        System.Data.OleDb.OleDbDataAdapter OleDbDataAdapter1=
            new System.Data.OleDb.OleDbDataAdapter(SQLString, OleDBConn1);
        //打开连接
        OleDBConn1.Open();
        //通过 OleDbDataAdapter对象填充数据集
        OleDbDataAdapter1.Fill(DataSet1, "TestDB");
        //连接数据表格显示数据
        dataGridView1.DataSource = DataSet1.Tables["TestDB"];
        OleDBConn1.Close();
        }

private void Form1_Load(object sender, EventArgs e)
{

}
}
}