.NET Framework 4.0 offers a set of new features focused on Observable/Observer design pattern. Actually, such pattern is a subset of Publish/Subscribe design pattern. Such kind of patterns aim to provide a mechanism for push-based notifications.
My friend and colleague José Miguel Torres has written the best post I’ve never read about it:
Take a look!
http://josemigueltorres.net/boresight/?p=369
:-)
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