Automapper unmapped members were found - even after I have mapped these members

Question

I have scoured the web and I can't figure out why in Automapper 6.2.1 I am having these issues. I have looked through many tutorials, guides and answers and come up with nothing.

I am getting this error:

Unmapped members were found. Review the types and members below.

Unmapped properties:
Title
Subtitle
ProductType
Language
Description

However I have created mappings for these properties. I'm not sure why I am having this issue.

I have created an AutoMapperConfig class that is setup like this:

public class AutoMapperConfig
    {
        public static void Initialize()
        {
            Mapper.Initialize(cfg =>
            {
                cfg.CreateMap<Shop, SearchViewModel>()
                    .ForMember(x => x.Title, opts => opts.MapFrom(x => x.TITLE))
                    .ForMember(x => x.Subtitle, opts => opts.MapFrom(x => x.SUB_TITLE))
                    .ForMember(x => x.ProductType, opts => opts.MapFrom(x => x.PRODUCT_TYPE))
                    .ForMember(x => x.Language, opts => opts.MapFrom(x => x.PRODUCT_LANGUAGE))
                    .ForMember(x => x.Description, opts => opts.MapFrom(x => x.BRIEF_DESC));  
            });
        }

Then in my Global.asax in the Application_Start() method I have this line:

AutoMapperConfig.Initialize();

I am trying to use this in my controller like this:

var searchResults = Mapper.Map<List<Shop>, SearchViewModel>(shopList);

After I hit that line it throws that exception. I'm not sure why since I have created maps for all of those properties.

Try creating a static class `public static class AutoMapperConfig` and static method `public static EntityMap` instead of `Initialize` and call it like `EntityMap.EntityMapper.Map....` — Vidmantas Blazevicius, Mar 15 '18 at 17:38

score 2 · Answer 1 · answered Mar 15 '18 at 17:43

This is how I have the AutoMapper set up in one of my projects (tailored to your example). I am using a static class and a static IMapper property inside the same class.

    public static class AutoMapperConfig
    {
        public static IMapper EntityMapper { get; set; }

        static EntityMap()
        {
            EntityMapper = new MapperConfiguration(cfg =>
            {
                cfg.CreateMap<Shop, SearchViewModel>()
                    .ForMember(x => x.Title, opts => opts.MapFrom(x => x.TITLE))
                    .ForMember(x => x.Subtitle, opts => opts.MapFrom(x => x.SUB_TITLE))
                    .ForMember(x => x.ProductType, opts => opts.MapFrom(x => x.PRODUCT_TYPE))
                    .ForMember(x => x.Language, opts => opts.MapFrom(x => x.PRODUCT_LANGUAGE))
                    .ForMember(x => x.Description, opts => opts.MapFrom(x => x.BRIEF_DESC));
            });
        }
    }

You can call it like this:

    EntityMap.EntityMapper.Map<List<Shop>, SearchViewModel>(shopList);

score 2 · Accepted Answer · answered Mar 15 '18 at 17:44

2

The datatype of searchResults is wrong.

To avoid this mistake in future, declare your variables with an explicit datatype. The following would never have compiled:

List<SearchViewModel> searchResults = Mapper.Map<List<Shop>, SearchViewModel>(shopList);

Try this instead:

List<SearchViewModel> searchResults = Mapper.Map<List<Shop>, List<SearchViewModel>>(shopList);

answered Mar 15 '18 at 17:44

1

This was it - I've been scratching my head for hours over this. Lesson learned! – maxshuty Mar 15 '18 at 17:46
1

Glad to be of help. – Mar 15 '18 at 17:50

Automapper unmapped members were found - even after I have mapped these members

2 Answers2