如何创建填充下面的polalyine (WPF)

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Canvas x:Name="canvas" Background="White"/>
    </Grid>
</Window>

using System.Windows;
using System.Windows.Media;

namespace WpfApp1
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            Loaded += MainWindow_Loaded;
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            DrawPolyline();
        }

        private void DrawPolyline()
        {
            Polyline polyline = new Polyline();
            polyline.Stroke = Brushes.Blue;
            polyline.StrokeThickness = 2;

            // 添加折线的点
            polyline.Points.Add(new Point(50, 100));
            polyline.Points.Add(new Point(100, 200));
            polyline.Points.Add(new Point(150, 150));
            polyline.Points.Add(new Point(200, 250));
            polyline.Points.Add(new Point(250, 200));

            // 将折线添加到Canvas中
            canvas.Children.Add(polyline);
        }
    }
}