Automapper - Smooth List At The Same Time

Question

I have a presentation model that I received from a client that looks something like this.

public class OrderViewModel { public string Name{get;set;} public string ContactDetails {get;set;} public List<FunkyThing_ViewModel> {get;set;} } public class FunkyThing_ViewModel { public string ThingName{get;set;} public string Colour{get;set;} public string Size{get;set;} } 

I want to match this with a list of domain models, where each looks something like this:

 public class Order { public string Name{get;set;} public string ContactDetails {get;set;} public string ThingName{get;set;} public string Colour{get;set;} public string Size{get;set;} } 

So, I want everything to end up looking like this:

 List<Order> orders = new Orders(); Mapper.CreateMap<OrderViewModel, List<Order>>(); //Something in here to ensure each funky thing creates an additional order.... Mapper.Map(viewModel, orders); 

Answer 1

 using System.Collections.Generic; using System.Linq; using AutoMapper; using NUnit.Framework; using SharpTestsEx; namespace StackOverflowExample.Automapper { public class OrderViewModel { public string Name { get; set; } public string ContactDetails { get; set; } public List<FunkyThingViewModel> FunkyThingViewModels { get; set; } } public class FunkyThingViewModel { public string ThingName { get; set; } public string Colour { get; set; } public string Size { get; set; } } public class Order { public string Name { get; set; } public string ContactDetails { get; set; } public string ThingName { get; set; } public string Colour { get; set; } public string Size { get; set; } } [TestFixture] public class FlattenWithListTests { [Test] public void FlattenListTest() { //arrange var source = new OrderViewModel { Name = "name", ContactDetails = "contact", FunkyThingViewModels = new List<FunkyThingViewModel> { new FunkyThingViewModel {Colour = "red"}, new FunkyThingViewModel {Colour = "blue"} } }; Mapper.CreateMap<FunkyThingViewModel, Order>(); Mapper.CreateMap<OrderViewModel, Order>(); Mapper.CreateMap<OrderViewModel, List<Order>>() .ConvertUsing(om => om.FunkyThingViewModels.Select( ftvm => { var order = Mapper.Map<Order>(om); Mapper.Map(ftvm, order); return order; }).ToList()); //act var mapped = Mapper.Map<List<Order>>(source); //assert mapped[0].Satisfy(m => m.Name == source.Name && m.ContactDetails == source.ContactDetails && m.Colour == "red"); mapped[1].Satisfy(m => m.Name == source.Name && m.ContactDetails == source.ContactDetails && m.Colour == "blue"); } } }