C# 如何从静态类更改UserControl属性？

我在MainWindow.xaml中有网格。网格中填充了我的UserControl修改按钮

在静态类Globals中，我有bool变量，它在按下按钮时发生变化。现在我需要改变这个bool变量的网格背景颜色

问题是，除了MainWindow.xaml.cs代码落后之外，我无法从其他位置访问网格

Global.cs：

public static class Globals
    {
        private static bool _player;
        public static bool Player {
            get { return _player; }

            set {
                _player = value;
                Debug.WriteLine(value);
            }
        }
    }

我的用户控件：

---

如果您没有实现MVVM模式或类似模式，您可以只获取包含的网格并设置颜色：

public partial class tetrisButton : UserControl
{
    public tetrisButton()
    {
        InitializeComponent();
        Button.Focusable = false;
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        Grid parent = FindParent<Grid>(this);

        if(!Globals.Player)
        {
            Button.Content = new cross();
            Globals.Player = true;
            parent.Background = Brushes.Blue;
        }
        else
        {
            Button.Content = new circle();
            Globals.Player = false;
            parent.Background = Brushes.Red;
        }

    }

    private T FindParent<T>(DependencyObject child) where T : DependencyObject
    {
         T parent = VisualTreeHelper.GetParent(child) as T;

         if (parent != null)
             return parent;
         else
             return FindParent<T>(parent);
    }
}

---

可以使用window.GetWindow方法获取对UserControl父窗口的引用：

为了能够访问网格，您可以在MainWindow.XAML:

---

为什么不改变点击方法中的背景？你应该考虑遵循MVVM模式，因为WPF 4.5很容易。因此，您可以简单地为网格的背景设置一个DataTrigger。

public partial class tetrisButton : UserControl
{
    public tetrisButton()
    {
        InitializeComponent();
        Button.Focusable = false;
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        Grid parent = FindParent<Grid>(this);

        if(!Globals.Player)
        {
            Button.Content = new cross();
            Globals.Player = true;
            parent.Background = Brushes.Blue;
        }
        else
        {
            Button.Content = new circle();
            Globals.Player = false;
            parent.Background = Brushes.Red;
        }

    }

    private T FindParent<T>(DependencyObject child) where T : DependencyObject
    {
         T parent = VisualTreeHelper.GetParent(child) as T;

         if (parent != null)
             return parent;
         else
             return FindParent<T>(parent);
    }
}

private void Button_Click(object sender, RoutedEventArgs e)
{
    MainWindow mainWindow = Window.GetWindow(this) as MainWindow;
    if (!Globals.Player)
    {
        Button.Content = new cross();
        Globals.Player = true;

        if (mainWindow != null)
            mainWindow.grid.Background = Brushes.Green;
    }
    else
    {
        Button.Content = new circle();
        Globals.Player = false;

        if (mainWindow != null)
            mainWindow.grid.Background = Brushes.Red;
    }
}

<Grid x:Name="grid" ... />