我的网络项目中有这个连接字符串
<add name="PortalEntities" connectionString="metadata=
res://Portal.Store.dll/PortalModel.csdl|
res://Portal.Store.dll/PortalModel.ssdl|
res://Portal.Store.dll/PortalModel.msl;provider=System.Data.SqlClient;provider connection string="data source=tst-sqlsrv01\dev;initial catalog=Portal;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
但它经常出现错误&#34;无法解决程序集&#39; Portal.Store.dll&#39;。
我做错了什么?