Question

Consider :

class OriginalContact
{
    public int Id{set;get;}
    public string Name{set;get;}
    public string CustomerCode{set;get;}
}

class DTOContact
{
    public int Id{set;get;}
    public string Name{set;get;}
}

OriginalContact originalContact = new OriginalContact
{
    CustomerCode="123";
}

DTOContact dtoContact= new DTOContact
{
    Id=1,
    Name="David"
}

Mapper.Map(dtoContact, originalContact);

After this mapping i lose CustomerCode value

Is there any way to map while keeping original values ?

Answer 1

You should be able to ‘ignore’ the destination value in your create map configuration:

Mapper.CreateMap<DTOContact,OriginalContact>()
  .ForMember(dest => dest.CustomerCode, options => options.Ignore());