wpf商品销售ui界面和控制器代码

以下是一个简单的 WPF 商品销售 UI 界面和控制器代码：

MainWindow.xaml：

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="商品销售" Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="2*" />
        </Grid.ColumnDefinitions>
        <StackPanel Grid.Column="0" Margin="10">
            <TextBlock Text="商品列表" FontWeight="Bold" FontSize="18" Margin="0 0 0 10" />
            <ListBox Name="lbProducts" DisplayMemberPath="Name" SelectionChanged="lbProducts_SelectionChanged" />
        </StackPanel>
        <StackPanel Grid.Column="1" Margin="10">
            <TextBlock Text="购物车" FontWeight="Bold" FontSize="18" Margin="0 0 0 10" />
            <ListBox Name="lbCart" DisplayMemberPath="Name" />
            <StackPanel Margin="0 10 0 0">
                <TextBlock Text="总价：" FontWeight="Bold" FontSize="16" />
                <TextBlock Name="tbTotalPrice" FontWeight="Bold" FontSize="16" />
            </StackPanel>
            <Button Content="结算" Margin="0 10 0 0" Click="btnCheckout_Click" />
        </StackPanel>
    </Grid>
</Window>

MainWindow.xaml.cs：

using System.Collections.Generic;
using System.Linq;
using System.Windows;

namespace WpfApp1
{
    public partial class MainWindow : Window
    {
        private List<Product> products = new List<Product>
        {
            new Product { Id = 1, Name = "商品1", Price = 10 },
            new Product { Id = 2, Name = "商品2", Price = 20 },
            new Product { Id = 3, Name = "商品3", Price = 30 },
            new Product { Id = 4, Name = "商品4", Price = 40 },
            new Product { Id = 5, Name = "商品5", Price = 50 },
        };

        private List<Product> cart = new List<Product>();

        public MainWindow()
        {
            InitializeComponent();
            lbProducts.ItemsSource = products;
        }

        private void lbProducts_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            var product = lbProducts.SelectedItem as Product;
            if (product != null)
            {
                cart.Add(product);
                lbCart.ItemsSource = null;
                lbCart.ItemsSource = cart;
                tbTotalPrice.Text = cart.Sum(p => p.Price).ToString();
            }
        }

        private void btnCheckout_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("结算成功！");
            cart.Clear();
            lbCart.ItemsSource = null;
            tbTotalPrice.Text = "";
        }
    }

    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public decimal Price { get; set; }
    }
}

在这个示例中，我们创建了一个窗口，分为两个列。左边的列显示商品列表，右边的列显示购物车和总价。

当用户选择一个商品时，我们将其添加到购物车中，并更新购物车和总价的显示。当用户点击“结算”按钮时，我们弹出一个消息框，清空购物车并重置显示。