.Map<IDataReader, FooDto> not mapping custom ForMember

All but one of my DTO members are mapped fine, but the one with a different property name (ForMember) doesn’t get mapped.

I have a DTO class:

public class FooDto
{
   ...
   public string UserId {get; set;}
}

My database record has a string column “Id” that I want to map into FooDto, UserId. My configure includes:

CreateMap<IDataReader, FooDto>()
   .ForMember(dest => dest.UserId, opt => opt.MapFrom(src => src.GetString(src.GetOrdinal("Id"))));

When I call:

var records = mapper.Map<IDataReader, IEnumerable<FooDto>>(reader);

The records include the value for all properties except the “Id” column. In fact, I can do this and my records are still missing a value:

CreateMap<IDataReader, FooDto>()
   .ForMember(dest => dest.UserId, opt => opt.MapFrom(src => "abc")));

I don’t think the ForMember code is being executed at all during the IDataReader mapping. Any ideas?

Using AutoMapper 7.0.1 and AutoMapper.Data 2.0.0.

[ColonelDuddits]

I know the root cause now. I’ll submit a PR later to fix it. In the meantime you can add AddMemberConfiguration().AddMember<DataRecordMemberConfiguration>(); to your Profile constructor and things should start mapping as expected.

[AleAuthenticGaming]

I’ve bypassed this issue by adding a mapping on IDataRecord.

 cfg.CreateMap<IDataRecord, Language>()
                                .ForMember(dest => dest.TwoLetterISOCode, opt => opt.MapFrom(src => (string)src["two_letter_iso"]))
                                .ForMember(dest => dest.ThreeLetterISOCode, opt => opt.MapFrom(src => (string)src["three_letter_iso"]));

                            cfg.CreateMap<IDataReader, Language>();

I’ve created the projection for the properties with a different name from the db field and it works correctly now