ConnectionString="<%$ ConnectionStrings:SQLConnString %>"


ConfigurationManager.ConnectionStrings["SQLConnString"].ConnectionString;


在项目的类中使用ConfigurationManager，除了添加 using System.Configuration;，还要在类的右击“引用”，添加System.Configuration。


 <caching>

   <sqlCacheDependency enabled="true" pollTime="10000">

    <databases>

     <add name="MSPetShop4" connectionStringName="SQLConnString1" pollTime="10000"/>

    </databases>

   </sqlCacheDependency>

  </caching>

<appSettings>

  <!-- Pet Shop DAL configuration settings. Possible values: PetShop.SQLServerDAL for SqlServer, PetShop.OracleServerDALfor Oracle. -->

  <add key="WebDAL" value="PetShop.SQLServerDAL"/>

  <add key="OrdersDAL" value="PetShop.SQLServerDAL"/>

  <add key="ProfileDAL" value="PetShop.SQLProfileDAL"/>

  <!-- Enable data caching -->

  <add key="EnableCaching" value="true"/>

  <!-- Cache duration (in hours-whole number only) -->

  <add key="CategoryCacheDuration" value="12"/>

  <add key="ProductCacheDuration" value="12"/>

  <add key="ItemCacheDuration" value="12"/>

  <!-- Cache dependency options. Possible values: PetShop.TableCacheDependency for SQL Server and keep empty for ORACLE -->

  <add key="CacheDependencyAssembly" value="PetShop.TableCacheDependency"/>

  <!-- CacheDatabaseName should match the name under caching section, when using TableCacheDependency -->

  <add key="CacheDatabaseName" value="MSPetShop4"/>

  <!-- *TableDependency lists table dependency for each instance separated by comma -->

  <add key="CategoryTableDependency" value="Category"/>

  <add key="ProductTableDependency" value="Product,Category"/>

  <add key="ItemTableDependency" value="Product,Category,Item"/>

  <!-- Order processing options (Asynch/Synch) -->

  <add key="OrderStrategyAssembly" value="PetShop.BLL"/>

  <add key="OrderStrategyClass" value="PetShop.BLL.OrderSynchronous"/>

  <!-- Asynchronous Order options -->

  <add key="OrderMessaging" value="PetShop.MSMQMessaging"/>

  <add key="OrderQueuePath" value="FormatName:DIRECT=OS:MachineName\Private$\PSOrders"/>

  <!-- Application Error Log -->

  <add key="Event Log Source" value=".NET Pet Shop 4.0"/>

 </appSettings>