C#_Access连接问题

 1、找不到可安装的 isam

 2、无法启动应用程序。工作组信息文件丢失，或是已被其他用户以独占方式打开

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

namespace DataBase练习
{
    public partial class frmConnectAccess : Form
    {
        public frmConnectAccess()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 连接数据源
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="PassWord">密码</param>
        /// <returns>是否连接成功</returns>
        private bool GetConnAccess(string UserName, string PassWord)
        {
            bool boo = false;
            
            try
            {
                string strPath = Application.StartupPath + @"\Access.mdb";
                string connStr = "Provider = Microsoft.Jet.OLEDB.4.0;Persist Security Info=true;Jet OLEDB:Database Password = '" + PassWord + "';User ID = " + UserName + ";Data Source = " + strPath;

                OleDbConnection oleCon = new OleDbConnection(connStr);
                OleDbDataAdapter oleDap = new OleDbDataAdapter("select * from 帐目", oleCon);
                DataSet oleSet = new DataSet();
                oleDap.Fill(oleSet, "帐目");
                gridAccess.DataSource = oleSet.Tables[0].DefaultView;
                oleCon.Close();
                oleCon.Dispose();
                boo = true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            return boo;
        }

        private void btnConnect_Click(object sender, EventArgs e)
        {
            string UserName = txtUserName.Text.Trim();
            string PassWord = txtPassWord.Text.Trim();
            bool boo = GetConnAccess(UserName, PassWord);
        }
    }
}

错误连接字符串：string connStr = "Provider = Microsoft.Jet.OLEDB.4.0;DataBase PassWord = '"+PassWord+"';User ID = "+UserName+";Data Source = " + strPath;

DataBase PassWord 应写成 Jet OLEDB:Database Password 注意加：Persist Security Info=true;

正确连接字符串：string connStr = "Provider = Microsoft.Jet.OLEDB.4.0;Persist Security Info=true;Jet OLEDB:Database Password = '" + PassWord + "';User ID = " + UserName + ";Data Source = " + strPath;