如何将标签绑定到WPF中同一窗口类中的字段？

<Label Content="{Binding myField}" />

<Window.DataContext>
    <local:MainWindowViewModel />
</Window.DataContext>

public class MainWindowViewModel : INotifyPropertyChanged
{
    private string _myField;

    public string myField
    {
        get { return _myField; }
        set
        {
            _myField = value;
            OnPropertyChanged(nameof(myField));
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

public MainWindow()
{
    InitializeComponent();
    DataContext = new MainWindowViewModel();
    myField = "Hello World";
}