Map List of Customers with automapper

Question

Using Automapper I am trying to map one object to another. One property is a class called Task containing a list of customers. The other class is called Result and contains a count of customers as well as another list of customers.

This is my current approach which fills information into the order properties correctly, but fails in result, which is still null. How can I get the List into result? How do i need to change the maps and do i need to create a map in both directions, or this this not necessary?

Mapper.Initialize(cfg =>
{
    cfg.CreateMap<CustomerPost.RootObject, Customers.RootObject>();

    cfg.CreateMap<CustomerPost.Order, Customers.Order>();

    cfg.CreateMap<Customers.Result, CustomerPost.Task>();                   
    cfg.CreateMap<CustomerPost.Task, Customers.Result>()
        .ForMember(x => x.customerscount, opt => opt.Ignore())
        .ForMember(x => x.customerstotalcount, opt => opt.Ignore());
});
try
{
    Mapper.AssertConfigurationIsValid();
}
catch (AutoMapperConfigurationException ex)
{
    //TODO: Handle this
    throw ex;
}

var customer = Mapper.Map<CustomerPost.RootObject, Customers.RootObject>(input);

here are my current classes (Customer):

    public class Result
    {
        public int customerstotalcount { get; set; }
        public int customerscount { get; set; }
        public List<Customer> customers { get; set; }
    }

    public class RootObject
    {
        public Status status { get; set; }
        public Order order { get; set; }
        public Result result { get; set; }
    }

CustomerPost:

    public class Task
    {
        public List<Customer> customers { get; set; }
    }

    public class RootObject
    {
        public Order order { get; set; }
        public List<Task> tasks { get; set; }
    }

Can you create a more minimal reproduction of your problem? I'm trying to reconstruct the problem, but there are too many missing pieces to the puzzle. — lxalln, May 04 '17 at 14:44
I've cleared up the code. Maybe this is more straight forward now, so that you can reproduce the error. What I'm trying to do is bind a List to another property. Should be simple.. alas it isn't — Uke, May 04 '17 at 20:35

score 0 · Accepted Answer · answered May 05 '17 at 07:22

Okay so the solution to my problem was that my mapping didn't find "result" so i've just mapped my RootObject like this:

Mapper.Initialize(cfg =>
                        {
                            cfg.CreateMap<CustomerPost.RootObject, Customers.RootObject>()
                                .ForMember(x => x.status, opt => opt.Ignore())
                                .ForMember(x => x.order, opt => opt.Ignore())
                                .ForMember(dest => dest.result, src => src.MapFrom(opt => opt.tasks.FirstOrDefault()));

then i went ahead and just mapped the result like this:

var result = Mapper.Map<CustomerPost.Task, Customers.Result>(input.tasks.FirstOrDefault());

var customer = new Customers.Customer();
customer = result.customers.FirstOrDefault();

and just bound it to a new Customerobject. Then all my information got transmitted as expected

Map List of Customers with automapper

1 Answers1