Lambda expression null

Question

This is what I have

Mapper.CreateMap<Domain.Code.CodeSection, EF.Code.CodeSection>().ForMember(dest => dest.Parent, opt => opt.MapFrom(src => src.Parent.Id));

This doesn't compile because src.Parent.Id is an Int and dest.Parent is an object.

All I want is to set dest.Parent to null.

Something like Mapper.CreateMap<Domain.Code.CodeSection, EF.Code.CodeSection>().ForMember(dest => dest.Parent, opt => opt.MapFrom(src => null));

Answer 1

MapFrom is used to connect properties - you want ResolveUsing:

Mapper.CreateMap<Domain.Code.CodeSection, EF.Code.CodeSection>()
      .ForMember(dest => dest.Parent, opt => opt.ResolveUsing(src => null));