AutoMapper

AutoMapperConfig.cs

public class AutoMapperConfig
    {
        public static void RegisterMappings()
        {
            Mapper.Initialize(c =>
            {
                c.AddProfile<DomainToViewModelMappingProfile>();
                c.AddProfile<ViewModelToDomainMappingProfile>();
            });
        }
    }

DomainToViewModelMappingProfile.cs

public class DomainToViewModelMappingProfile : Profile
    {
        public override string ProfileName
        {
            get { return "ViewModelToDomainMappings"; }
        }

        protected override void Configure()
        {
            Mapper.CreateMap<UserViewModel, User>();
        }
    }

ViewModelToDomainMappingProfile.cs

public class ViewModelToDomainMappingProfile : Profile
    {
        public override string ProfileName
        {
            get { return "DomainToViewModelMappings"; }
        }

        protected override void Configure()
        {
            Mapper.CreateMap<User, UserViewModel>();
        }
    }