How can I Automap a missmatch between two models with a different number of fields? - automapper

Question

I use Visual Studio 2019 and .net core 3.1. I have a couple of related models, CustomerCountries and CustomerRegions in a one-to-many relationship, i.e. 1 CustomerCountries has many CustomersRegions.
In the views of the regions I want to show the name of the countries, not the id, that's why I created a ViewModel:
public class CustomerCountryRegionVM
{
public int IdCustomerRegion { get; set; }
public string CustomerRegion { get; set; }
public int IdCustomerCountry { get; set; }
public string CustomerCountry { get; set; }
}
The issue is that the regions model does not have the CustomerCountry field, it has the foreign primary key IdCustomerCountry. So I don't know how to do the mapping, I've tried it but I get a missmatch. One has 4 fields and the other 3. Do I have to make a discount for the viewmodel? or is there another option?
public class CustomerRegionsDto
{
public int IdCustomerRegion { get; set; }
public string CustomerRegion { get; set; }
[ForeignKey("CustomerCountryId")]
public int IdCustomerCountry { get; set; }
public CustomerCountriesDto CustomerCountryDto { get; set; }
}
public class CustomerRegions
{
[Key]
public int IdCustomerRegion { get; set; }
[StringLength(50, ErrorMessage = "Longitud máxima para la región: 50")]
public string CustomerRegion { get; set; }
[ForeignKey("IdCustomerCountry")]
public int IdCustomerCountry { get; set; }
public CustomerCountries CustomerCountry { get; set; }
}
Automapping class
CreateMap<CustomerRegionsDto, CustomerRegions>();
CreateMap<CustomerRegions, CustomerRegionsDto>();
CreateMap<CustomerCountryRegionVM, CustomerRegions>();
CreateMap<CustomerRegions, CustomerCountryRegionVM>();
CreateMap<CustomerCountryRegionVM, CustomerCountryRegionDto>();
CreateMap<CustomerCountryRegionDto, CustomerCountryRegionVM>();
In the controller:
var model = _mapper.Map<CustomerCountryRegionVM, CustomerRegionsDto>(ccr);
The other model:
public class CustomerCountries
{
public int IdCustomerCountry { get; set; }
[StringLength(50, ErrorMessage = "Longitud máxima para el país: 50")]
public string CustomerCountry { get; set; }
public ICollection<CustomerRegions> CustomerRegions { get; set; }
}

Answer 1

You can map particular property
CreateMap<BusinessService.Model.PermitDashboard, BusinessService.Model.Permit>()
.ForMember(x => x.PermitId, opt => opt.MapFrom(z => z.PermitId))
.ForMember(x => x.PermitTitle, opt => opt.MapFrom(z => z.PermitTitle))
.ForPath(x => x.PermitType.PermitTypeName, opt => opt.MapFrom(z => z.PermitType))
.ForMember(x => x.EffectiveDt, opt => opt.MapFrom(z => z.EffectiveDt))
.ForMember(x => x.ExpirationDt, opt => opt.MapFrom(z => z.ExpirationDt))
.ReverseMap();