Map fields with same name to different fileds in automapper

Question

I have a model which I am trying to map from Match class in .net core 2.0. Both the classes have a Name property.

I need to map Match.Value => ViewCompany.Name

But it always puts Match.Name into ViewCompany.Name

Here is my AutomapperProfile:

CreateMap<Match, ViewCompany>()
                .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.Value));

.ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.Value))

ViewCompany:

public class ViewCompany
{
    public ViewCompany()
    {

    }

    public ViewCompany(string name)
    {
        this.Name = name;
    }

    public int Id { get; set; }

    public string Name { get; set; }
}

The above mapping doesn't work.

But if I change property name in the model to something else like "Value" or "tempName" and update the automapper profile, it works fine.

So, is it not possible to map properties with same names to different properties in Automapper?

@LucianBargaoanu I have the latest 6.0.0 version of Automapper.Extensions.Microsoft.DependencyInjection — Sachin Parashar
– Sachin Parashar, Commented Apr 1, 2019 at 11:49
Most likely your configuration is ignored because you're not setting it up properly. Check the docs. — Lucian Bargaoanu
– Lucian Bargaoanu, Commented Apr 1, 2019 at 12:23
@LucianBargaoanu Configuration seems fine because I changed property "Name" to "CompanyName" and updated configuration .ForMember(dest => dest.CompanyName, opt => opt.MapFrom(src => src.Value)) And it worked. — Sachin Parashar
– Sachin Parashar, Commented Apr 1, 2019 at 12:39

Lucian Bargaoanu · Accepted Answer · 2019-04-01 13:28:54Z

3

What happens here is that Name is mapped through the constructor. A simple way to avoid that is to tell AM what constructor to use:

 CreateMap<Match, ViewCompany>().ConstructUsing(source=>new ViewCompany());

answered Apr 1, 2019 at 13:28

Lucian Bargaoanu

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4 Comments

Sachin Parashar Over a year ago

You are absolutely right. I was just trying the same in a new dummy project without that constructor and it worked.

Sachin Parashar Over a year ago

Actually, I don't need that constructor anymore. So, I removed that and it's working as expected now. Thanks a lot @Lucian

maximus Over a year ago

The parameter in the lambda expression should be dest for not creating confusion: ConstructUsing(dest => new ViewCompany());

Lucian Bargaoanu Over a year ago

Actually no :) You receive the source and you return the destination.

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