Error - None of the constructors found with 'Orchard.Environment.AutofacUtil.DynamicProxy2.ConstructorFinderWrapper'

问题

I have a custom module, Module1. In this module, I am referencing another custom module, Module2. Everything was working fine last week.

I did a fresh re-install of Orchard this morning. Since then, I have been getting this error.

None of the constructors found with 'Orchard.Environment.AutofacUtil.DynamicProxy2.ConstructorFinderWrapper' on type 'Module1' can be invoked with the available services and parameters: Cannot resolve parameter 'Module2' of constructor 'Void .ctor(...)'.

Any idea how to fix this error?

Thanks.

回答1:

That means that an implementation of some interface could not be found. Several thing can have happened: a module may have failed to compile, or you forgot to make an interface derive from IDependency.

回答2:

I know the post is quite old now, but just to link any possible mistake that could cause the described problem... here is my mistake.

I simply forgot to enable the referenced module from the dashboard. Of course that didn't prevent me to add a project reference and module dependency, having the code compiling perfectly .

The point is, my referenced module doesn't contain any content type definition. It is just a module conceived to collect some functionality and common utilities. That's why I forgot to enable it.

Cheers.

回答3:

I had the same issue. It seems that I referenced the concrete class and not the interface in my constructor.

        public OrderService(
            IRepository<Order> orderRepository,
            ProductService productService,
            ProductCategoryService productCategoryService
        )

Instead of

        public OrderService(
            IRepository<Order> orderRepository,
            IProductService productService,
            IProductCategoryService productCategoryService
        )

回答4:

You can get this error if you manually enabled your modules. Make sure you delete App_Data\cache.dat and recycle the app pool.

回答5:

checklist is:

Interface derive from IDependency
Implementation derive from Interface
Constructor references the Interface
Build All and check if all referenced modules compile
Enable module in Admin panel

example:



    public class myController : Controller{
        private readonly IMyService _myService;

        public myController(
            IMyService myService
        ) {
        _myService = myService;
        }
    }



    public interface IMyService : IDependency
    {
        int GetOne();
    }



    public class MyService: IMyService 
    {
        public MyService()
        { // init code }

        public int GetOne()
        { return 1; }
    }

来源：https://stackoverflow.com/questions/10807938/error-none-of-the-constructors-found-with-orchard-environment-autofacutil-dyn

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