如何将Xamarin Forms复选框isChecked绑定到动态布尔变量？

<CheckBox IsChecked="{Binding IsChecked}" />

public class MyViewModel : INotifyPropertyChanged
{
    private bool isChecked;
    public bool IsChecked
    {
        get { return isChecked; }
        set
        {
            isChecked = value;
            OnPropertyChanged(nameof(IsChecked));
        }
    }

    // INotifyPropertyChanged implementation
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

public partial class MyPage : ContentPage
{
    public MyPage()
    {
        InitializeComponent();
        BindingContext = new MyViewModel();
    }
}