public void Update(Manufacturer manufacturer)
        {
            Manufacturer rManufacturer = GetManufacturerById(manufacturer.ID);

            if (rManufacturer == null)
                return;

            rManufacturer.Name = manufacturer.Name;
            rManufacturer.Website = manufacturer.Website;
        }
 public void Insert(Manufacturer manufacturer)
 {
     db.Manufacturers.Add(manufacturer);
     db.SaveChanges();
 }