WPF MVVM在高度和宽度改变后在屏幕上重新居中应用程序？

<Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <!-- 应用程序的内容 -->
</Grid>

private double _windowHeight;
public double WindowHeight
{
    get { return _windowHeight; }
    set
    {
        _windowHeight = value;
        OnPropertyChanged(nameof(WindowHeight));
    }
}

private double _windowWidth;
public double WindowWidth
{
    get { return _windowWidth; }
    set
    {
        _windowWidth = value;
        OnPropertyChanged(nameof(WindowWidth));
    }
}

<Window Height="{Binding WindowHeight}" Width="{Binding WindowWidth}">
    <!-- 应用程序的内容 -->
</Window>

private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
{
    double newHeight = e.NewSize.Height;
    double newWidth = e.NewSize.Width;

    // 计算居中后的高度和宽度
    double centeredHeight = newHeight; // 根据需要进行计算
    double centeredWidth = newWidth; // 根据需要进行计算

    // 更新ViewModel中的属性
    ViewModel.WindowHeight = centeredHeight;
    ViewModel.WindowWidth = centeredWidth;
}