将值从javascript发送到控制器

在我们的MVC项目中，我们使用以下javascript函数，我们已经确保这是一个没有任何错误的工作函数。

function GetSelectedItems() {
        var newItemIDs = [];
        $("#SelectItems  tbody").find('tr').each(
        function () {
            var id = $(this).find('#hfID').val();
            var IsAdd = $(this).hasClass('k-state-selected');
            if (IsAdd == true) {
                newItemIDs.push(id);
            }
        });
        jQuery.ajaxSettings.traditional = true
        $.post("/Form8Invoice/AddItemToCart", { NewItemIDs: newItemIDs });

然而，当张贴数组值到控制器，似乎值没有得到适当的传递。控制器动作方法如下，供快速参考。

[HttpPost]
        public ActionResult AddItemToCart(string[] newItemIDs, [DataSourceRequest] DataSourceRequest request)
        {
            if (newItemIDs != null)
            {
                float grandTotal = 0;
                string currentLocation = GetCurrentLocation();
                foreach (string itemID in newItemIDs)
                {
                    Location location = new Location();
                    Stock stock = new Stock();
                    float UnitPrice = 0;
                    float SellingPrice = 0;
                    if(string.IsNullOrEmpty(currentLocation))
                    {
                        List<Stock> stokList = _stockRepositoty.GetStocksByItemId(new Guid(itemID)).ToList();
                        stock = stokList[0];
                    }
                    else if (currentLocation != "admin")
                    {
                        location = _locationRepository.GetLocationByName(currentLocation);
                        stock = _stockRepositoty.GetStockByItemIdAndLocation(new Guid(itemID), location.LocationId);
                    }
                    else
                    {
                        List<Stock> stokList = _stockRepositoty.GetStocksByItemId(new Guid(itemID)).ToList();
                        stock = stokList[0];
                    }
                    if (stock != null)
                    {
                        if (!string.IsNullOrEmpty(stock.UnitPrice.ToString()))
                        {
                            UnitPrice = float.Parse(stock.UnitPrice.ToString());
                            SellingPrice = UnitPrice; // + tax - discount
                        }
                    }
                    if (_cartItemsRepository.IsItemAlreadyAdded(GetCurrentLocation(), GetCurrentUser(), new Guid(itemID)))
                    {
                        CartItem cartItem = _cartItemsRepository.GetItem(GetCurrentLocation(), GetCurrentUser(), new Guid(itemID));
                        int Quantity = cartItem.Quantity;
                        cartItem.Quantity = cartItem.Quantity + 1;
                        _cartItemsRepository.UpdateItems(cartItem);
                        float NetAmount = SellingPrice * cartItem.Quantity;
                        grandTotal = grandTotal + NetAmount;
                    }
                    else
                    {
                        CartItem cartItem = new CartItem();
                        cartItem.LocationName = GetCurrentLocation();
                        cartItem.UserName = GetCurrentUser();
                        cartItem.ItemId = new Guid(itemID);
                        cartItem.Quantity = 1;
                        _cartItemsRepository.InsertItems(cartItem);
                        float NetAmount = SellingPrice * cartItem.Quantity;
                        grandTotal = grandTotal + NetAmount;
                    }

                }
                ViewBag.GrandTotal = grandTotal.ToString();
                _cartItemsRepository.Save();
            }
            return View();
        }

$.post("/Form8Invoice/AddItemToCart", { newItemIDs: newItemIDs });