如何在WPF中绘制很多可点击的矩形？

// MainWindow.xaml.cs

using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            // 创建矩形
            for (int i = 0; i < 10; i++)
            {
                Rectangle rect = new Rectangle();
                rect.Width = 50;
                rect.Height = 50;
                rect.Fill = Brushes.Blue;

                // 添加点击事件处理程序
                rect.MouseLeftButtonDown += Rect_MouseLeftButtonDown;

                // 将矩形添加到布局容器中
                canvas.Children.Add(rect);
            }
        }

        private void Rect_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            // 处理矩形点击事件
            Rectangle rect = sender as Rectangle;
            rect.Fill = Brushes.Red;
        }
    }
}

<!-- MainWindow.xaml -->

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="WPF App" Height="450" Width="800">
    <Grid>
        <Canvas x:Name="canvas"/>
    </Grid>
</Window>