Reactive Extension (Rx) tutorial that is up to date

Question

I am quite interested in Reactive Extensions but I cannot find an up to date tutorial. I started with Curing the asynchronous blues with the Reactive Extensions for .NET but it is out of date. I can figure out some changes but I could not get many examples working. I found many articles on the web, mainly from 2009,2010 but they are also incompatible with the current release. I am especially interested in using Rx with Windows Phone and WebClient: ``` WebClient wc = new WebClient(); var o = Observable.FromEvent<DownloadStringCompletedEventArgs>(wc, "DownloadStringCompleted").Select(newString => newString.EventArgs.Result); // Subscribe to the observable, and set the label text o.Subscribe(s => myLabel.Text = s); // Start the download wc.DownloadStringAsync(new Uri("http://www.data.com/service")); ``` Do not work anymore and replacing `FromEvent` with `FromEventPattern` is not enough. Can somebody point me to an up to date resource?

Accepted Answer

When learning Rx the first thing is to understand the philosophy behind IObservable and how it's push based nature compares with IEnumerable. I suggest the following one for a good explanation: A[nother] Simpler Tutorial for Reactive Extensions

Lee Campbell has nice series explaining the api and when to use them. He also tries to keep it up to date with latest releases: Reactive Extensions for .NET an Introduction The series is now available as a book at Introduction to Rx

By the way, I have also written a blog post about solving real life problem with rx: Using Reactive Extensions for Streaming Data from Database

Hope this helps.

Reactive Extension (Rx) tutorial that is up to date

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