由于Access是文件数据库，所以在ASP.NET需要能映射访问到Access文件：
方式一：appSettings中设置连接字符串web.config的配置方式一<appSettings><add key="provider" value="Provider=Microsoft.Jet.OLEDB.4.0;data source="/><add key="dbPath" value="~/App_Data\PF.mdb"/></appSettings>通过Server.Map()拼接数据库方式一private static readonly String connStr =System.Configuration.ConfigurationManager.AppSettings["provider"].ToString()+System.Web.HttpContext.Current.Server.MapPath(ConfigurationManager.AppSettings["dbPath"])+";";————————————————————————————————————————————————————连接字符串方式二：SqlDataSource连接access<connectionStrings><add name="WebSiteConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|PF.mdb;Persist Security Info=true;" /></connectionStrings>private static readonly string conStr = System.Configuration.ConfigurationManager.ConnectionStrings["ACCDB"].ConnectionString;-------------------------------------Access数据库 连接字符串全解析（Asp.net）密码：
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|Financing_db.mdb;Persist Security Info=False;Jet OLEDB:Database Password=xxxxxx用户名和密码：
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|Financing_db.mdb;Persist Security Info=False;User Id=admin;Jet OLEDB:Database Password=xxxxxx通常：
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|Financing_db.mdb其中:
|DataDirectory|系统被解析到App_Data文件夹下。————————————————————————————sql 连接字符串设置web.config 文件<configuration>
<!--连接字符串-->
<connectionStrings>
<add name="sql2005" connectionString="Data Source=.;Initial catalog=MySchool;uid=sa;pwd=221221"/>
</connectionStrings>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
</system.web>
</configuration>————————————————————————————private readonly static String connStr = "Data Source=.\\sqlexpress;Initial catalog=ShoppingCart;User ID=sa;Password=221221";
private static readonly String conStr=System.Configuration.ConfigurationManager.ConnectionStrings["sql2005"].ConnectionString; public static SqlConnection GetConnection
{
get{return new SqlConnection(conStr);}
}