C#•2y ago

automapper in net framework

hi all, i tried to implement automapper using net framework 4.7.2, i tried in net core im able to convert from NoteItem to Note (same data retrieved from database), but when i implement this in net framework the noteResult give me 0 result, even tho there's no exception or error thrown, can anyone help advise what could be wrong?

                var config = new MapperConfiguration(cfg => {
                    cfg.CreateMap<List<NoteItem>, List<Note>>();
                });

                IMapper mapper = config.CreateMapper(); 
                var noteResult = mapper.Map<List<NoteItem>, List<Note>>(result); //result have list of NoteItem retrieved from a database

                var config = new MapperConfiguration(cfg => {
                    cfg.CreateMap<List<NoteItem>, List<Note>>();
                });

                IMapper mapper = config.CreateMapper(); 
                var noteResult = mapper.Map<List<NoteItem>, List<Note>>(result); //result have list of NoteItem retrieved from a database

5 Replies

Becquerel•2y ago

i don't think it's standard to set up mappings between List<T> and List<X> you'd do the mapping between T and X directly then if you want to map a list, you just do it inside a .Select()

joy•2y ago

omg.. it works after i changed the mapping to T and X instead of List<T> to List<X>

               var config = new MapperConfiguration(cfg => {
                    cfg.CreateMap<NoteItem, Note>();
                });

                IMapper mapper = config.CreateMapper(); 
                var noteResult = mapper.Map<List<Note>>(result);

               var config = new MapperConfiguration(cfg => {
                    cfg.CreateMap<NoteItem, Note>();
                });

                IMapper mapper = config.CreateMapper(); 
                var noteResult = mapper.Map<List<Note>>(result);

joy•2y ago

previously i was following the mapping like this solution..

joy•2y ago

thank you!!

Becquerel•2y ago

no prob note that here they already have a mapping between Person and PersonView and then they can perform the mapping between lists of those types they don't set up the mapping between List<Person> and List<PersonView> that's why they say you don't need to repeat for Lists

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automapper in net framework