public void AddProduct(Product p)
        {
            string categoryName = p.Category;
            int categoryId = getCategoryId(categoryName);
            if (categoryId != CATEGORYNOTFOUND)
            {
                using (var db = new EntitySamsung())
                {
                    Samsung_Product product = new Samsung_Product(p.Name, categoryId, p.Color, (int)p.Price, p.Stock, p.Details);
                    db.Samsung_Product.Add(product);
                    db.SaveChanges();

                }
            }
        }
 public void RemoveProduct(Product p)
 {
     //productsList.Remove(p);
     int categoryId = getCategoryId(p.Category);
     Samsung_Product product = new Samsung_Product(p.Id,p.Name, categoryId, p.Color, (int)p.Price, p.Stock, p.Details);
     using (var db = new EntitySamsung())
     {
         db.Samsung_Product.Remove(product);
         db.SaveChanges();
     }
 }