aspnet连数据库

web config 里
<appSettings>
    <add key="dbPath" value="data/-_-.ascx"/>
    <add key="ConnectionString" value="Provider=Microsoft.Jet.OLEDB.4.0;Data source=|DataDirectory|db1.mdb;"/>
    <add key="BoardURL" value="Board.aspx?BoardID=$BoardID&amp;GroupID=$GroupID" />
    <add key="BoardPagerURL" value="Board.aspx?BoardID=$BoardID&amp;GroupID=$GroupID&amp;Page=$Page" />
    <add key="TopicURL" value="Topic.aspx?BoardID=$BoardID&amp;TopicID=$TopicID" />
    <add key="TopicPagerURL" value="Topic.aspx?BoardID=$BoardID&amp;TopicID=$TopicID&amp;Page=$Page" />   
</appSettings>

.cs里

string ST_ConnectionString;
ST_ConnectionString=ConfigurationSettings.AppSettings["ConnectionString"];