AutoMapping Array to a List

Question

class A
{
  public List<string> list;
}

class B
{
  public string[] array;
}

How would you map this?

I've tried

CreateMap<A,B>();

That doesn't work

b.array = a.list.ToArray() ?

L.B
– L.B

2014-07-02 19:36:11 +00:00
Commented Jul 2, 2014 at 19:36 — L.B
– L.B, Commented Jul 2, 2014 at 19:36

Justin Niessner · Accepted Answer · 2014-07-02 19:38:26Z

5

Your first issue is going to be that the class members don't match. If they did, I'd imagine that this would work. If not, you just have to specify your mapping rather than letting Automapper infer it:

CreateMap<A,B>()
    .ForMember(d => d.array, opts => opts.MapFrom(s => s.list.ToArray());

answered Jul 2, 2014 at 19:38

Justin Niessner

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3 Comments

Proximo Over a year ago

The collection is not a string but a NameValueCollection for two different name spaces so I'm assuming those need to be mapped too. Any ideas there?

Jimmy Bogard Over a year ago

Yes, it's because the names don't match, it has nothing to do with arrays/lists. @Proximo you might want to update your question to include the actual collection types.

Proximo Over a year ago

I was going to but I figured out how to map the different internal collections individually. This answer saved the day.

Suraj Rao · Accepted Answer · 2018-10-26 12:41:45Z

0

For a shortcut, a vb.net version

CreateMap(Of A, B)().ForMember(Function(d) d.array, Sub(opts) opts.MapFrom(Function(s) s.list.ToArray()))

edited Oct 26, 2018 at 12:41

Suraj Rao

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answered Oct 26, 2018 at 12:40

ResidentIvo

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