如何避免不断更新，添加自定义Autofac构建容器类的代码？

Question

我正在将Autofac用于C＃Windows控制台应用程序。我的控制台应用程序解决方案的项目层详细信息如下。

步骤1：我创建了一个自定义Microsoft Entity Framework数据库上下文类和存储库类

// custom C# Entity Framework database context named MyDbContext that inherits Entity Framework  DbContext class.
public class MyDbContext: DbContext { }

// custom C# repository class named MyRepository that implements IMyRepository interface.
public class MyRepository: IMyRepository{ }

public interface IMyRepository { }

第2步：我有一个单独的C＃库项目

具有C＃业务类的C＃库。此C＃库项目的程序集名称为“ MyBusinessAssembly”。在这个库项目中，我有一些带有参数构造函数的C＃自定义业务类：

public class BusinessA: IBusinessA { 
    private readonly DbContext context;
    private readonly IMyRepository repository; 

    public BusinessA(DbContext ctx, IMyRepository rep){
         context = ctx;
         repository = rep;
    }
    ... 
}
public interface IBusinessA {...}

public class BusinessB: IBusinessB { 
    private readonly DbContext context;
    private readonly IMyRepository repository; 

    public BusinessB(DbContext ctx, IMyRepository rep){
         context = ctx;
         repository = rep;
    }
    ... 
}

public interface IBusinessB {...}


public class BusinessC: IBusinessC { 
    // Note: this business class uses the 2 business classes above as dependency injection

    private readonly DbContext context;
    private readonly IMyRepository repository; 
    private readonly IBusinessA businessA;
    private readonly IBusinessB businessB;

    public BusinessC(DbContext ctx, IMyRepository rep, IBusinessA bA, IBusinessB bB){  // *********************************** (LINE 1)
         context = ctx;
         repository = rep;
         businessA = ba;
         businessB = bB;
    }
    ... 
}

public interface IBusinessC {...}

步骤3：我还有另一个单独的C＃库项目。该项目引用了上述第2步中C＃库项目中的DDL文件]

在此项目中，我创建了一个自定义Autofac构建容器类，其中包含以下详细信息

public class MyContainer {
     public static IContainer BuildContainer()
        {            
            var container = new ContainerBuilder();

            // register Entity Framework Db context
            container.RegisterType<MyDbContext>()
                .As<DbContext>()
                .InstancePerDependency();

            // register my custom repository concrete class and its interface
            container.RegisterType<MyRepository>()
                .As<IMyRepository>()
                .InstancePerDependency();


           // Note: right now I have to register service class ServiceC as following with explicitly codes of object instantiations

            var myDbContext = new MyDbContext();
            var myRepository = new MyRepository(myDbContext);

            var businessA = new BusinessA(myDbContext, myRepository);
            var businessB = new BusinessB(myDbContext, myRepository);

            // Now, I have to instantiate BusinessC object register its type as following
            var businessC = new BusinessC (myDbContext, myRepository, businessA, businessB);      // ***********************************  (LINE 2)


            container.Register<IBusinessC>(x => businessC)
                .InstancePerDependency();           

            return container.Build();                    
        }

}
如果要从第2步库项目中的BusinessC类需要一个新的业务类（例如IBusinessD），将来会出现MyContainer类的代码问题，BusinessC的参数构造函数必须另外包含一个依赖注入（DI）参数，如下所示：（请参阅// **************************** *******（第1行的第2行）

注意：我可以用IBusinessD的另一个DI参数扩展BusinessC的构造函数。

public class BusinessC: IBusinessC
{
    ... 
    private readonly IBusinessD businessD; // new code line

    // add one more DI paramter IBusinessD bD to the constructor of BusinessC class:
    public BusinessC(DbContext ctx, IMyRepository rep, IBusinessA bA, IBusinessB bB, IBusinessD bD){  // *********************************** (LINE 1)
         context = ctx;
         repository = rep;
         businessA = ba;
         businessB = bB;
         businessD = bD; // new code line
    }
}
现在，我必须返回到上面的步骤3，如下所述修改步骤3中的MyContainer类。我不能继续添加，更新如下指定代码行之类的代码。
public class MyContainer {
     public static IContainer BuildContainer()
        {  
            ...

            // Note: I am not OK with keeping adding codes like following whenever BusinessC needs a new business class such as BusinessD. How can I avoid keeping adding codes like this?
            var businessD = new BusinessD(myDbContext, myRepository); // new code line

            // Note: I am not OK with keeping updating codes like following. How can I avoid keeping updating codes like this?
            var businessC = new BusinessC (myDbContext, myRepository, businessA, businessB, businessD); // updated with argument called businessD     // ***********************************  (LINE 2)
            ...

        }
}
我的问题：
每当步骤2中某些业务类的构造函数发生变化时，如何避免继续更新MyContainer类的代码？我可以从上述步骤2扩展BusinessC的构造函数，但是我不想从步骤3更新MyContainer类的代码。只要在步骤2中某些业务类的构造函数发生变化，是否对MyContainer类进行一些自动编码？

谢谢您的帮助。

我正在将Autofac用于C＃Windows控制台应用程序。我的控制台应用程序解决方案的项目层详细信息如下。步骤1：我创建了一个自定义Microsoft Entity Framework数据库上下文...

Answer 1

我自己找到了答案，并且关闭了该线程