更新和删除列表视图行

Question

Binding it to the WPF ListView, using ItemsSource="{Binding Path=ProductList}" :

   private ObservableCollection<SalesItem> _ProductList = new ObservableCollection<SalesItem>();
            public ObservableCollection<SalesItem> ProductList { get { return _ProductList; } set { _ProductList = value; } }

Insert a new row into ListView:

SalesItem item = new SalesItem { Picture = product.Picture, ProductName = product.Name, Quantity = 1, TotalPrice = product.Price };
            ProductList.Add(item);

Now I want to update the quantity, and price, if the quantity is zero, remove from list :

  List<SalesItem> salesItems = (from SalesItem items in this.dgProductList.ItemsSource
                                     select items).ToList<SalesItem>();

        foreach (SalesItem salesItem in salesItems)
        {
            if (salesItem.ProductName == cbMultiProductList.Text.Trim())
            {
                // Increase item quantity
                salesItem.Quantity = salesItem.Quantity + 1;
            }
        }

Thank you.

---

EDITED:

SalesItem is EF Code first model.

Tried this, the problem is he new row will append to the last row:

ProductList.Remove(salesItem);
ProductList.Add(salesItem);

Answer 1

为此，您需要在SalesItem类中实现INotyfyPropertyChanged，并为每个属性进行通知。