IOC錯誤

問題描述：

 

The type DbConnection cannot be constructed. You must configure the container to supply this value.

 

用戶代碼未處理 Microsoft.Practices.Unity.ResolutionFailedException

  HResult=-2146233088

  Message=Resolution of the dependency failed, type = "UIShell.OneCardService.IMembershipCardRepository", name = "(none)".

Exception occurred while: while resolving.

Exception is: InvalidOperationException - The type DbConnection cannot be constructed. You must configure the container to supply this value.

-----------------------------------------------

At the time of the exception, the container was:

 

  Resolving UIShell.OneCardService.MembershipCardRepository,(none) (mapped from UIShell.OneCardService.IMembershipCardRepository, (none))

  Resolving parameter "context" of constructor UIShell.OneCardService.MembershipCardRepository(LCL.Repositories.IRepositoryContext context)

    Resolving LCL.Repositories.EntityFramework.EntityFrameworkRepositoryContext,(none) (mapped from LCL.Repositories.IRepositoryContext, (none))

    Resolving parameter "efContext" of constructor LCL.Repositories.EntityFramework.EntityFrameworkRepositoryContext(System.Data.Entity.DbContext efContext)

      Resolving System.Data.Entity.DbContext,(none)

      Resolving parameter "existingConnection" of constructor System.Data.Entity.DbContext(System.Data.Common.DbConnection existingConnection, System.Data.Entity.Infrastructure.DbCompiledModel model, System.Boolean contextOwnsConnection)

        Resolving System.Data.Common.DbConnection,(none)

 

解決辦法：

   把 efContext 加入進去就能夠了，構造函數參數錯誤。