// GET: Admin/SubscriptionProduct/Edit/5
        public async Task <ActionResult> Edit(int?subscriptionId, int?productId)
        {
            if (subscriptionId == null || productId == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            SubscriptionProduct subscriptionProduct = await GetSubscriptionProduct(subscriptionId, productId);

            if (subscriptionProduct == null)
            {
                return(HttpNotFound());
            }
            return(View(await subscriptionProduct.ConvertAsync(db)));
        }