Reactive Extensions (Rx) v1.0.2856.0

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Reactive Extensions (Rx) is a library to compose asynchronous and event-based programs using observable reactive data sequences and LINQ-style query operators.

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Version: 1.0.2856.0 Date published: 2/11/2011
Language: English

Files in this download

The links in this section correspond to files available for this download. Download the files appropriate for you.

File name Size
Rx_All.msi 14.6 MB Download
Rx_Net35.msi 5.7 MB Download
Rx_Net4.msi 3.9 MB Download
Rx_SL3.msi 3.2 MB Download
Rx_SL4.msi 3.2 MB Download
Rx_WP7.msi 2.7 MB Download
Rx_XNA31_Zune.msi 2.7 MB Download
Rx_XNA4_XBOX360.msi 2.7 MB Download


Asynchronous, event-driven "reactive" programming is way too hard in today's world of development tools and frameworks. The huge amount of manual and error-prone plumbing leads to incomprehensible and hard to maintain code. As we reach out to services in the cloud, asynchronous programming is the way of life, requiring a fresh look on the problems imposed by reactive programming. Centered around the concept of observable data sequences, Reactive Extensions (Rx) provides a framework that takes care of the hard parts of reactive event stream programming. Instead of getting lost in the jungle of asynchrony complexity, you now can start dreaming about the endless possibilities of composing queries over asynchronous data sources.

For more information about these technologies, click Reactive Extensions (Rx) Homepage.

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System requirements

Supported operating systems: Windows 7, Windows Phone 7, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP

  • Any of the following platforms can be targeted using Rx:
    • .NET Framework 3.5 SP1
    • .NET Framework 4
    • Silverlight 3
    • Silverlight 4
    • Windows Phone 7
    • XNA 3.1 for Zune
    • XNA 4.0 for Xbox 360
    A separate download for a JavaScript version of the library is available as well.

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Download and Installation

  1. Click the Download button on this page to start the download.
  2. Run the installer and follow the instructions on the screen.
  1. In Visual Studio 2008 or later, open the Add Reference... dialog and add references to the System.CoreEx and System.Reactive assemblies.
  2. Reference assemblies for Rx can be found in the Program Files (x86)\Microsoft Cloud Programmability\Reactive Extensions folder.

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