How to configure map of List attribute in AutoMapper? - automapper

Question

I'm pretty newbie to AutoMapper. I have four classes:
public class Source
{
public int Id {get;set;}
public List<SourceItem> items {get;set;}
}
public class SourceItem
{
public int Id {get;set;}
public string firstName {get;set;}
public string lastName {get;set;}
}
public class Destination
{
public int Id {get;set;}
public List<SourceItemDestination> items {get;set;}
}
public class SourceItemDestination
{
public int Id {get;set;}
public string firstName {get;set;}
}
Is it possible to create a mapping profile to map Source to Destination allowing to bring the list of SourceItemDestination when performing mapper.Map?

Answer 1

Done! Here are my classes:
using AutoMapper;
using AutoMapper.EquivalencyExpression;
using Infrastructure.Data.Context;
using Microsoft.Extensions.DependencyInjection;
using System;
using WebAPI.AutoMapper;
namespace WebAPI.Configurations
{
public static class AutoMapperConfig
{
public static void AddAutoMapperConfiguration(this IServiceCollection services)
{
if (services == null) throw new ArgumentNullException(nameof(services));
services.AddAutoMapper((serviceProvider, automapper) =>
{
automapper.AddCollectionMappers();
automapper.UseEntityFrameworkCoreModel<CellLabDbContext>(serviceProvider);
}, typeof(MappingProfile).Assembly);
}
}
}
using ApplicationCore.Domain;
using AutoMapper;
namespace WebAPI.AutoMapper
{
public class MappingProfile : Profile
{
public MappingProfile()
{
CreateMap<SourceItem, SourceItemDestination>().ReverseMap();
CreateMap<Source, Destination>().ReverseMap();
}
}
}
Important tip: I had problems when mapping the lists because the property items of Source class were read only:
public class Source
{
public int Id {get;set;}
public List<SourceItem> items {get;}
}
By doing this the mapper does not map the list. However, it does not raise any error or warning.