自动映射和映射复杂集合

Question

Hi I have a question about automapper, thing is I have a model that has nested collection of other models, and models in that collection also has a collection of models something like (DB model):

public class Cabin 
{
    public uint Id { get; set; }
    public string Name { get; set; }        
    public Rack[] Racks { get; set; }
}

public class Rack
{
    public uint Id { get; set; }
    public string RackName { get; set; }
    public IPAddress IpAddress { get; set; }
    public int Port { get; set; }
    public Module[] Modules { get; set; }
}

public class Module
{
    public uint Id { get; set; }
    public string ModuleName { get; set; }
}

Well from Dto side I have something like:

public class CabinDto 
{
    public uint Id { get; set; }
    public string Name { get; set; }
    public RackDto[] Racks { get; set; }
}

public class RackDto
{
    public uint Id { get; set; }
    public string Name { get; set; }
    public ModuleDto[] Modules{ get; set; }
}

public class ModuleDto
{
    public string Name { get; set; }
}

So I want to map it all at once, but figure out a way to map a list object with different properties names.

For main class I have:

CreateMap<Db.Cabin, Dto.Cabin>()
  .ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.Id))
  .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.Name));
  // how to map nested list

I could just add some method that assigns values and map to this method, but it does not feel right. I looked in documentation and there are only examples with simple collection with same name lists.

Is there a way to do it?

Answer 1

You just need to add mapping for the type in the nested list and AutoMapper will take care of it.

CreateMap<Db.Module, Dto.Module>();
CreateMap<Db.Rack, Dto.Rack>();

Also when the name of properties in source and origin are the same, you don't need to call the ForMember() method.
So in your case you need it for the ModuleName to Name of the Module to ModuleDto mapping, and same for the Rack class, see this fiddle .