public static bool Delete(Int32 productId, Int32 volumeDiscountId)
        {
            ProductVolumeDiscount productVolumeDiscount = new ProductVolumeDiscount();

            if (productVolumeDiscount.Load(productId, volumeDiscountId))
            {
                return(productVolumeDiscount.Delete());
            }
            return(false);
        }
 public static bool Delete(ProductVolumeDiscount productVolumeDiscount)
 {
     return(productVolumeDiscount.Delete());
 }