RxUI 4.0 View Bindings

MainPage.xaml.cs

    public sealed partial class MainPage : Page, IViewForViewModel<MainPageViewModel>
    {
        public MainPage()
        {
            this.InitializeComponent();

            // Wired up by convention, looks for a control on MainPage named Test and wires it up
            this.Bind(ViewModel, x => x.Test);

            // Same deal, looks for a control named FooTest
            this.OneWayBind(ViewModel, x => x.FooTest);
        }

        object IViewForViewModel.ViewModel
        {
            get { return ViewModel; }
            set { ViewModel = (MainPageViewModel)value; }
        }

        public MainPageViewModel ViewModel { get; set; }
    }

MainPageViewModel.cs

    public class MainPageViewModel : ReactiveObject
    {
        string _Test;
        public string Test {
            get { return _Test; }
            set { this.RaiseAndSetIfChanged(x => x.Test, value); }
        }

        ObservableAsPropertyHelper<string> _FooTest;
        public string FooTest {
            get { return _FooTest.Value; }
        }

        public MainPageViewModel()
        {
            this.WhenAny(x => x.Test, x => x.Value)
                .Select(x => "Foo" + x ?? "")
                .Do(x => Debug.WriteLine(x))
                .ToProperty(this, x => x.FooTest);
        }
    }