CODEWITHSUNDEEP
c#automapper
ssnake
ssnake

Reputation: 236

AutoMapper - Array of int to list of custom objects

Starting from these example:

public class A
{
    public int[] ArrayOfIds { get; set; }
}

public class B
{
    public List<C> MyList { get; set; }
}

public class C
{
    public int Id { get; set; }
}

I want to create a mapping from A to B, where B contains a list of C objects, identified with ids of A.

How can I configure AutoMapper to achieve this?

Upvotes: 3

Views: 1819

Answers (1)

Samvel Petrosov
Samvel Petrosov

Reputation: 7706

You can do the following:
1. Create Map from int to C, so that you can do casting on int[]
2. Create Map from A to B 

A a = new A();
a.ArrayOfIds = new int[] { 1, 2, 3 };
var config = new MapperConfiguration(cfg => {
    cfg.CreateMap<int, C>().ForMember(dest => dest.Id, opts => opts.MapFrom(src => src));
    cfg.CreateMap<A, B>().ForMember(dest => dest.MyList, opts => opts.MapFrom(src => src.ArrayOfIds));
});

IMapper mapper = config.CreateMapper();
var b = mapper.Map<B>(a);

Upvotes: 5

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