public async Task <IActionResult> Edit(int id, [Bind("PurchaseDetailID,ProductID,PurchaseID,PurchaseQuantity,PurchasePrice")] PurchaseDetailsModel purchaseDetailsModel)
        {
            if (id != purchaseDetailsModel.PurchaseDetailID)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(purchaseDetailsModel);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!PurchaseDetailsModelExists(purchaseDetailsModel.PurchaseDetailID))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            ViewData["PurchaseID"] = new SelectList(_context.PurchaseModel, "PurchaseID", "PurchaseDescription", purchaseDetailsModel.PurchaseID);
            ViewData["ProductID"]  = new SelectList(_context.ProductModel, "ProductID", "ProductDescription", purchaseDetailsModel.ProductID);
            return(View(purchaseDetailsModel));
        }
        public async Task <IActionResult> Create([Bind("PurchaseDetailID,ProductID,PurchaseID,PurchaseQuantity,PurchasePrice")] PurchaseDetailsModel purchaseDetailsModel)
        {
            if (ModelState.IsValid)
            {
                _context.Add(purchaseDetailsModel);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            ViewData["PurchaseID"] = new SelectList(_context.PurchaseModel, "PurchaseID", "PurchaseDescription", purchaseDetailsModel.PurchaseID);
            ViewData["ProductID"]  = new SelectList(_context.ProductModel, "ProductID", "ProductDescription", purchaseDetailsModel.ProductID);
            return(View(purchaseDetailsModel));
        }