c# - 更新和删除列表视图行

Question

将其绑定到 WPF ListView，使用ItemsSource="{Binding Path=ProductList}"：

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

在 ListView 中插入一个新行：

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

现在我想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;
            }
        }

谢谢你。

---

编辑：

SalesItem是 EF 代码优先模型。

试过这个，问题是他的新行将附加到最后一行：

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

Answer 1

For that you need to implement INotyfyPropertyChanged in SalesItem class and Notify for each Property.