如何修复ADODB连接简单登录代码WPF

using System;
using System.Data;
using System.Windows;
using ADODB;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        private Connection connection;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void ConnectButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                // 创建ADODB.Connection对象
                connection = new Connection();

                // 设置连接字符串
                connection.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\mydatabase.mdb;User Id=admin;Password=;";

                // 打开数据库连接
                connection.Open();

                MessageBox.Show("连接成功！");
            }
            catch (Exception ex)
            {
                MessageBox.Show("连接失败：" + ex.Message);
            }
        }

        private void LoginButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                // 创建ADODB.Recordset对象
                Recordset recordset = new Recordset();

                // 执行SQL查询语句
                recordset.Open("SELECT * FROM Users WHERE Username='" + usernameTextBox.Text + "' AND Password='" + passwordTextBox.Text + "'", connection);

                if (!recordset.EOF)
                {
                    MessageBox.Show("登录成功！");
                }
                else
                {
                    MessageBox.Show("用户名或密码错误！");
                }

                // 关闭Recordset对象
                recordset.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("登录失败：" + ex.Message);
            }
        }

        private void DisconnectButton_Click(object sender, RoutedEventArgs e)
        {
            // 关闭数据库连接
            if (connection != null && connection.State == (int)ObjectStateEnum.adStateOpen)
            {
                connection.Close();
                MessageBox.Show("连接已断开！");
            }
        }
    }
}