Automapper 5.2 with inheritance not working

Question

I have an Entity:

public abstract class BaseEntity
{
     public Int16 Id { get; set; }
     public DateTime Timestamp { get; set; }
}

public class Certificate : BaseEntity
{
    public String Name { get; set; }
    public String Authority { get; set; }
    public DateTime RecieveDate { get; set; }
    public String Image { get; set; }
}

And I have a ViewModel:

public abstract class BaseViewModel
{
    public Int16 Id { get; set; }
    public DateTime Timestamp { get; set; }
}

public class Certificate : BaseViewModel
{
    public String Name { get; set; }
    public String Authority { get; set; }
    public DateTime RecieveDate { get; set; }
    public String Image { get; set; }
}

I need to map Entity.Certificate to ViewModel.Certificate (I don't really need to map BaseEntity at all, I want to get rid of it). I have Mapper profile:

 public class MappingProfile : Profile
 {
    public MappingProfile()
    {
        CreateMap<Storage.Entities.Entities.BaseEntity, ViewModels.ViewModels.BaseViewModel>()
            .Include<Storage.Entities.Entities.Certificate, ViewModels.ViewModels.Certificate>();
        CreateMap<Storage.Entities.Entities.Certificate, ViewModels.ViewModels.Certificate>();
    }
 }

Registered in ConfigureServices:

services.AddAutoMapper();

All 3 classes mentioned above are in different projects (if it makes any sence).

This is controller constructor:

    private readonly Storage.Abstractions.Core.IStorage _storage;
    private readonly IMapper _mapper;
    public CertificateController(Storage.Abstractions.Core.IStorage storage, IMapper mapper)
    {
        this._storage = storage;
        this._mapper = mapper;
    }

And Get Method where I map entity to viewModel:

   IEnumerable<Storage.Entities.Entities.Certificate> certificates = await this._storage.GetRepository<ICertificateRepository>().AllAsync();
   IEnumerable<ViewModels.ViewModels.Certificate>result = _mapper.Map<IEnumerable<Storage.Entities.Entities.Certificate>, IEnumerable<ViewModels.ViewModels.Certificate>>(certificates);

Looks correct, right? BUT:

Error mapping types.

Mapping types: IEnumerable1 -> IEnumerable1 System.Collections.Generic.IEnumerable1[[AlexanderTsema.Storage.Entities.Entities.Certificate, AlexanderTsema.Storage.Entities, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] -> System.Collections.Generic.IEnumerable1[[AlexanderTsema.ViewModels.ViewModels.Certificate, AlexanderTsema.ViewModels, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]

and Inner Exc: Missing type map configuration or unsupported mapping.

Mapping types: Certificate -> Certificate AlexanderTsema.Storage.Entities.Entities.Certificate -> AlexanderTsema.ViewModels.ViewModels.Certificate

Please advice.

I tried to map Entity.Certificate to Entity.Certificate and it works fine.

Answer 1

I think what you might be missing is at least one type or assembly that AutoMapper could use to discover profiles.

services.AddAutoMapper(typeof(MappingProfile)); should do the trick.