Using Automapper to map an objects list

Question

I have an object (ProductModel) that has a nested list of images. I am trying to simplify the model (Product) that has this list as its property. I am using Automapper, but I can not seem to get the mapping configuration right. I viewed several other posts, but they seem to be a little different than what I am trying to achieve.

// Map to:
public class Product
{
    public List<Image> Images { get; set; }
}

public class Image
{
    public string url { get; set; }
}


// Map from:
public class ProductModel
{
    public ImageSet ImageSet { get; set; }
}

public class ImageSet
{
    public List<ImageDetail> ImageDetails { get; set; }
}

public class ImageDetail
{
    public string Url { get; set; }
}

you need to have the same name on the properties or create a mapping confiugration — johnny 5
– johnny 5, Commented Mar 1, 2017 at 3:56
Yes, it's the configuration that I'm trying to figure out because the objects can not change. — RyanOC
– RyanOC, Commented Mar 1, 2017 at 5:25

Richard · Accepted Answer · 2017-03-01 09:30:32Z

2

The following configuration should work:

var config = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<ImageDetail, Image>();
    cfg.CreateMap<ProductModel, Product>()
        .ForMember(dest => dest.Images, opt => opt.MapFrom(src => src.ImageSet.ImageDetails))
        ;
});

answered Mar 1, 2017 at 9:30

Richard

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