public void UpdateBySampleID()
        {
            template_wd_ic_coverpage existing = _repository.Find(x => x.sample_id == this.sample_id).FirstOrDefault();

            //this.ID = existing.ID;
            _repository.Edit(existing, this);
        }
        public void Update()
        {
            template_wd_ic_coverpage existing = _repository.Find(x => x.id == this.id).FirstOrDefault();

            if (existing != null)
            {
                _repository.Edit(existing, this);
            }
            else
            {
                Console.WriteLine();
            }
        }