具有不同实体的转换返回类型

Question

Here is my method and i would like to cast my return - also i am doing this to prevent from changing my different methods i have and wanted to also know will this have any negative affect if a cast my return?

public VisitEntry Get(Guid visitEntryId)
    {
        var visitEntry = _visitEntryRepository.Get(visitEntryId);
        VisitEntryDTO dto = AutoMapper.Mapper.Map<VisitEntry, VisitEntryDTO>(visitEntry);
        dto.CasePartyIds =
            _casePartyService.GetAllForHearingEntry(visitEntryId).Select(caseParty => caseParty.CasePartyId).ToList();
        return dto;
    }

The error i get is for: return dto. Stating: that I cannot converty ...Entity.VisitEntryDTO to ...Entity.VisitEntry.

any clarification will be great. Thanks!

Answer 1

You likely can't directly cast from VisitEntryDTO to VisitEntry . You'll need to Automap back.

However, your repository seemingly already returns VisitEntry objects, so why are you mapping to a VisitEntryDTO in the first place? Why not just do:

public VisitEntry Get(Guid visitEntryId)
{
    var visitEntry = _visitEntryRepository.Get(visitEntryId);
    visitEntry.CasePartyIds =
        _casePartyService.GetAllForHearingEntry(visitEntryId).Select(caseParty => caseParty.CasePartyId).ToList();
    return visitEntry;
}

Unless I'm missing something about your VisitEntry class.