Automapping - for IEnumerable map multiple properties with different name

Question

I have two class Say:

  public class SourceData
        {
            public string SourceCode { get; set; }        
            public string SourceName { get; set; }
        }

and

public class DestData
    {
        public string Code { get; set; }
        public string DestName { get; set; }
    }

I try to map IEnumerable of SourceData to DestData, but it is not working

I try with

AutoMapper.Mapper.CreateMap<IEnumerable<SourceData >, IEnumerable<DestData>>()

Answer 1

Both classes have fields with different names. AutoMapper won't pick them up automatically. So you need to explicitly tell it how to map fields in both classes. You do this like this.

Mapper.CreateMap<SourceData, DestData>()
   .ForMember(dest => dest.DestName, a => a.MapFrom(src => src.SourceName))
   .ForMember(dest => dest.Code, a => a.MapFrom(src => src.SourceCode))

Note that you're creating maps between types themselves not between collections of types as AutoMapper will automatically handle collections. Next just use following to map:

var destList= Mapper.Map<List<DestData>>(sourceList);

or

Mapper.Map<List<SourceData>, List<DestData>>(sourceList, destList);

depending on your situation.

Answer 2

Mapper.Map>(someDataEnum)Have you mapped SourceData to DestData? You don't have to map collections.

var configuration = Mapper.Configuration;

configuration.CreateMap<SourceData, DestData>()
    .ForMember(lite => lite.Code, src => src.MapFrom(post => post.SourceCode))
    .ForMember(lite => lite.DestName, src => src.MapFrom(post => post.SourceName))

and to map

var destDataCollection= Mapper.Map<IEnumerable<SourceData>, IEnumerable<DestData>>(sourceDataCollection);