Simplifying Asynchronous Calls in Silverlight using Action

This post explores a way to encapsulate web service calls from Silverlight in a way that is easy to use and understand.

As anyone who works with Silverlight knows, Silverlight forces web service calls to be asynchronous. There is a good reason for this, which I won’t get into with this post. What I would like to do is demonstrate an approach that advocates a clean separation of the internals of the service from the application that is consuming it.

First, I am assuming you understand web services and WCF. I assume you’ve called services from Silverlight, and are aware of the nuances of configuring the endpoint, etc. I am also going to assume you are familiar with some frameworks such as Prism, MEF, Caliburn, etc that advocate clean separation of concerns and modular design.

from jeremy likness                                  more here

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