RegisterAssemblyTypes with UsingConstructor

问题

I want to register assembly types which has multiple constructors Autowiring chooses the wrong constructor and want to specify it as I do in RegisterType

builder.RegisterType(typeof(IController))
    .UsingConstructor(typeof(IUnitOfWork));

But when I do this

builder.RegisterAssemblyTypes(typeof(IController).Assembly)
    .UsingConstructor(typeof(IUnitOfWork));

I get

"No matching constructor exists on type 'System.Object'."

I think this is due to the fact that assembly type is a bit more complex than i thought, but the problem remains open

What should I do?

回答1:

By doing

builder.RegisterType(typeof(IController))
       .UsingConstructor(typeof(IUnitOfWork));

You register IController inside Autofac container and tell it that it should use a constructor with a IUnitOfWork parameter.

The UsingConstructor method doesn't work with RegisterAssemblyTypes but in your case you can use FindConstructorWith method.

builder.RegisterAssemblyTypes(typeof(IController).Assembly)
       .FindConstructorsWith(t => new[] { 
           t.GetConstructor(new[] { typeof(IUnitOfWork) }) 
       })
       .As<IController>();

来源：https://stackoverflow.com/questions/12782680/registerassemblytypes-with-usingconstructor