public Observation UpdateObservationDbFromObservationVm(Observation observation, ObservationVm observationVm)
        {
            observation.CycleId       = _observationRepository.UpdateCycleId(observationVm.ParentChartId, observationVm.NumberOfParentCycleInChart);
            observation.NumberInCycle = observationVm.NumberInCycle;
            observation.Marker        = _observationRepository.GetMarkerByValue(observationVm.Marker).FirstOrDefault();
            observation.PeakDayNumber = observationVm.PeakDayNumber;
            observation.Date          = observationVm.Date;
            observation.Letter        = _observationRepository.GetLetterByValue(observationVm.Letter).FirstOrDefault();
            observation.IsB           = observationVm.IsB;
            observation.NumTimes      = _observationRepository.GetNumTimesByValue(observationVm.NumTimes).FirstOrDefault();
            observation.Cipher        = _observationRepository.GetCipherByValue(observationVm.Cipher).FirstOrDefault();
            observation.CipherCd      = _observationRepository.GetCipherCdByValue(observationVm.CipherCd).FirstOrDefault();
            //comments. notes, pictures
            //public int? CommentId { get; set; }
            //public virtual IList<Comment> Comments { get; set; }

            foreach (var item in observationVm.Notes)
            {
                ObservationNote note = new ObservationNote()
                {
                    Id            = item.Id,
                    IsImportant   = item.IsImportant,
                    Content       = item.Content,
                    ObservationId = item.ObservationId
                };

                if (item.Content != "")
                {
                    if (item.Id != 0)
                    {
                        _observationRepository.UpdateNote(note);
                    }
                    else
                    {
                        _observationRepository.AddNote(note);
                    }
                }
                else if (item.Id != 0)
                {
                    _observationRepository.DeleteNote(note);
                }
            }

            return(observation);
        }