C#连接Access数据时总报找不到dbo.mdb的问题

在web  config中  作如下配置：
<connectionStrings>
    <add name="ydycon" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;
Data Source=|DataDirectory|ydy.mdb" providerName="System.Data.OleDb"/>
 
  </connectionStrings>
在.net文件中应用链接 ......

public static void Main()
        {
            WebRequest req = WebRequest.Create("http://blog.csdn.net/xiaofengsheng");
            try
  & ......

2008-04-10 09:45 //*******FactoryManage.cs using System;
using System.Reflection;
using System.Configuration;
using CoalTraffic.IDAL; namespace CoalTraffic.DALFactory
{
    /// <summary>
    /// 抽象工厂模式创建DAL。
   ......

How to access HTTP server using Telnet
1、Telnet www.baidu.com 80
Type : Ctrl + ]
//-------------------------------------------------------------------------------
Type : Enter
//-------------------------------------------------------------------------------
Input : GET / HTTP/1 ......

Data Source=sqlservername;Initial Catalog=dbname;User ID=userid;Password=userpwd
Data Source=(local)\\SQLEXPRESS;Initial Catalog=数据库名;Integrated Security=True
Data Source=(local);Initial Catalog=数据库名;User ID=帐号;Password=帐号密码
Provider=Microsoft.Jet.OleDb.4.0;Data Source=C:\BegASPNET\ ......