None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type

10,690

The injection site requires an EntitiesContext, but you only registered it for IdentityDbContext<ApplicationUser>.

Try this:

    builder.RegisterType<EntitiesContext>().AsSelf()
           .As<IdentityDbContext<ApplicationUser>>().InstancePerApiRequest();
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user2517610
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user2517610

Updated on June 05, 2022

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  • user2517610
    user2517610 almost 2 years

    I have read many questions about this problem on SO but I could not figure out what is the issue with my implementation.

    I am getting following exception:

    None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type 'SampleAuthTemplate.Domain.Entities.Core.Repositories.Concrete.EntityRepository`1[SampleAuthTemplate.Domain.Entities.Order]' can be invoked with the available services and parameters: ↵Cannot resolve parameter 'SampleAuthTemplate.Domain.Entities.Core.EntitiesContext entitiesContext' of constructor 'Void .ctor(SampleAuthTemplate.Domain.Entities.Core.EntitiesContext)'."

    Following is the AutoFac registrations:

    private static IContainer RegisterServices(ContainerBuilder builder)
            {
                builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
                // registration goes here
                builder.RegisterType<EntitiesContext>().As<IdentityDbContext<ApplicationUser>>().InstancePerApiRequest();
                builder.RegisterGeneric(typeof(EntityRepository<>)).As(typeof(IEntityRepository<>)).InstancePerApiRequest();
                //builder.RegisterGeneric(typeof(AuthRepository<>)).As(typeof(IAuthRepository<>)).InstancePerApiRequest();
    
                builder.RegisterType<AuthRepository>().As<IAuthRepository>().InstancePerApiRequest();
    
                builder.RegisterType<OrderService>().As<IOrderService>().InstancePerApiRequest();
                return builder.Build();
            }
    

    and EntitiesContext class:

    public class EntitiesContext : IdentityDbContext<ApplicationUser>
        {
            public EntitiesContext(): base("SampleApp")
            {
            }
    
            public IDbSet<Order> Orders {get;set;}
            public IDbSet<OrderDetail> OrderDetails { get; set; }
        }
    

    Please guide me.

    Thank you.