Where do I find Observable in VS2010?

I have VS2010 RTM installed and I want to add a reference to the Reactive Framework, I've looked for system.CoreEx and system.Reactive and they are not there开发者_JAVA技巧. What am I doing wrong?

You need to download and install the Rx assemblies for .Net v4.0, since Rx is not yet released:

http://msdn.microsoft.com/en-us/devlabs/ee794896.aspx

Another alternative, which is shipping, is the Observable module in F#:

http://msdn.microsoft.com/en-us/library/ee370313(VS.100).aspx

EDIT - Rx 2.0 is released now, so you might feel better about taking a dependency: http://msdn.microsoft.com/en-us/data/gg577610.

Only the IObservable<T> and IObserver<T> interfaces are in the .NET v4.0 framework. The Rx operators and related classes are in the download pointed out by codekaizen.

Codekaizen's response was best answer until Microsoft put Rx to open source: Reactive Extensions (Rx) is now Open Source