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>