如何访问传递到WPF窗口的类？

public partial class MyWindow : Window
{
    private MyClass myClass;

    public MyWindow(MyClass myClass)
    {
        InitializeComponent();
        this.myClass = myClass;
    }
}

public partial class MyWindow : Window
{
    public MyClass MyClass { get; set; }

    public MyWindow()
    {
        InitializeComponent();
    }
}

MyWindow window = new MyWindow();
window.MyClass = myClassInstance;

public partial class MyWindow : Window
{
    public void SetMyClass(MyClass myClass)
    {
        // 使用传递的类实例
    }

    public MyWindow()
    {
        InitializeComponent();
    }
}

MyWindow window = new MyWindow();
window.SetMyClass(myClassInstance);