public AnswerViewModel GetAnswerByAnswerId(int AnswerId) { Answer a = ar.GetAnswersByAnswerId(AnswerId).FirstOrDefault(); AnswerViewModel avm = null; if (a != null) { var config = new MapperConfiguration(cfg => { cfg.CreateMap <Answer, AnswerViewModel>(); cfg.IgnoreUnmapped(); }); IMapper mapper = config.CreateMapper(); avm = mapper.Map <Answer, AnswerViewModel>(a); } return(avm); }