如何在silverlight的checkbox上绑定2个属性？

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

    private bool isEnabled;
    public bool IsEnabled
    {
        get { return isEnabled; }
        set
        {
            isEnabled = value;
            OnPropertyChanged("IsEnabled");
        }
    }

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

<UserControl x:Class="MySilverlightApp.MainPage"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:MySilverlightApp"
             Width="400" Height="300">
    <UserControl.Resources>
        <local:MyViewModel x:Key="ViewModel" />
    </UserControl.Resources>
    
    <Grid DataContext="{StaticResource ViewModel}">
        <CheckBox IsChecked="{Binding IsChecked}" IsEnabled="{Binding IsEnabled}" Content="My Checkbox" />
    </Grid>
</UserControl>

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();
        DataContext = new MyViewModel();
    }
}