AutoMapper DataServiceCollection to List

Question

I am attempted to use AutoMapper to map a DataServiceCollection to a list of strings and also create the reverse mapping. Any ideas on how to map a specialized collection like this to another?

Mapper.CreateMap<DataServiceCollection<LocationCountyValue>, List<string>>();

What code are you currently using to map the two? – Andrew Whitaker Jun 13 '15 at 18:35 — Andrew Whitaker, Jun 13 '15 at 18:35

score 1 · Answer 1 · answered Jun 14 '15 at 03:08

You can create a custom type converter:

public class DataServiceCollectionToStringList : ITypeConverter<DataServiceCollection<LocationCountyValue>, List<string>> {
    public List<string> Convert(ResolutionContext context) {
        var sourceValue = (DataServiceCollection<LocationCountyValue>) context.SourceValue;

        /* Your custom mapping here. */
    }
}

Then create the map with ConvertUsing:

Mapper.CreateMap<DataServiceCollection<LocationCountyValue>, List<string>>()
      .ConvertUsing<DataServiceCollectionToStringList>();

score 0 · Accepted Answer · answered Jun 15 '15 at 12:54

Thanks to Thiago Sa I created the mapping in both directions like so:

Mapper.CreateMap<DataServiceCollection<CountyValue>, List<string>>()
    .ConvertUsing((src) => { return src.Select(c => c.Value).ToList(); });

Mapper.CreateMap<List<string>, DataServiceCollection<CountyValue>>()
    .ConvertUsing((src) =>
    {
        return new DataServiceCollection<CountyValue>(
            src.Select(c => new CountyValue() { Value = c }));
    });

AutoMapper DataServiceCollection to List

2 Answers2