Reactive Extensions - Much simpler asynchronous and event based programming

Reactive Extensions helps developers write asynchronous and event based operations in a much simpler way. The user must specify a SynchronizationContext to which the Rx messages are sent. For e.g: If you are using a console app, you should specify the Context as

Observable.Context = SynchronizationContexts.ReactiveEventLoop

For WPF applications your Context will be

Observable.Context = SynchronizationContexts.CurrentDispatcher;

You can write subscriptions to your control events using Rx like

Observable.FromEvent<RoutedEventArgs>(button1, "Click").Subscribe(x => this.Close());

Or

var __StartTimer = button2.GetClickEvents().Subscribe(x => MessageBox.Show("Starting timer..."));

where GetClickEvents is an extension method on UIElements to track clicks on them

public static IObservable<IEvent<RoutedEventArgs>> GetClickEvents(this UIElement uiElement)

{

     return Observable.FromEvent<RoutedEventArgs>(uiElement, "Click");

}