public async Task <IActionResult> PutArtikel(int id, Artikel artikel)
        {
            if (id != artikel.ArtikelId)
            {
                return(BadRequest());
            }

            _context.Entry(artikel).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ArtikelExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <IActionResult> PutStichprobe(int id, Stichprobe stichprobe)
        {
            if (id != stichprobe.StichprobeId)
            {
                return(BadRequest());
            }

            _context.Entry(stichprobe).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!StichprobeExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }