如何从C#代码中获取屏幕尺寸到XAML？

using System.Windows.Forms;

Screen primaryScreen = Screen.PrimaryScreen;
int screenWidth = primaryScreen.Bounds.Width;
int screenHeight = primaryScreen.Bounds.Height;

<Window x:Class="YourNamespace.YourWindow"
        ...
        x:Name="mainWindow">

mainWindow.Width = screenWidth;
mainWindow.Height = screenHeight;

using System.Windows;
using System.Windows.Forms;

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

            Screen primaryScreen = Screen.PrimaryScreen;
            int screenWidth = primaryScreen.Bounds.Width;
            int screenHeight = primaryScreen.Bounds.Height;

            this.Width = screenWidth;
            this.Height = screenHeight;
        }
    }
}

<Window x:Class="YourNamespace.MainWindow"
        ...
        x:Name="mainWindow">
    <!-- XAML内容 -->
</Window>