Best way to bind WPF properties to ApplicationSettings in C#?

Question

What is the best way to bind WPF properties to ApplicationSettings in C#? Is there an automatic way like in a Windows Forms Application? Similar to this question, how (and

Answer 1

Kris, I'm not sure this is the best way to bind ApplicationSettings, but this is how I did it in Witty.

1) Create a dependency property for the setting that you want to bind in the window/page/usercontrol/container. This is case I have an user setting to play sounds.

    public bool PlaySounds
    {
        get { return (bool)GetValue(PlaySoundsProperty); }
        set { SetValue(PlaySoundsProperty, value); }
    }

    public static readonly DependencyProperty PlaySoundsProperty =
        DependencyProperty.Register("PlaySounds", typeof(bool), typeof(Options),
        new FrameworkPropertyMetadata(false, new PropertyChangedCallback(OnPlaySoundsChanged)));

    private static void OnPlaySoundsChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
    {
        Properties.Settings.Default.PlaySounds = (bool)args.NewValue;
        Properties.Settings.Default.Save();
    }

2) In the constructor, initialize the property value to match the application settings

      PlaySounds = Properties.Settings.Default.PlaySounds;

3) Bind the property in XAML

You can download the full Witty source to see it in action or browse just the code for options window.