public Artickles Delete(int articklesId)
        {
            Artickles artickle = ArtickleList.FirstOrDefault(a => a.ArticklesId == articklesId);

            if (artickle != null)
            {
                ArtickleList.Remove(artickle);
            }
            return(artickle);
        }
        public Artickles Update(Artickles changedArtickle)
        {
            Artickles artickle = ArtickleList.FirstOrDefault(a => a.ArticklesId == changedArtickle.ArticklesId);

            if (artickle != null)
            {
                artickle.Name      = changedArtickle.Name;
                artickle.BasePrice = changedArtickle.BasePrice;
                artickle.Type      = changedArtickle.Type;
            }
            return(artickle);
        }
 public Artickles Add(Artickles artickles)
 {
     artickles.ArticklesId = ArtickleList.Max(a => a.ArticklesId) + 1;
     ArtickleList.Add(artickles);
     return(artickles);
 }