Like most software, Silverlight applications need to interact with the outside world to get relevant, current information. You’ve already seen one tremendously useful way to pull information into a Silverlight application—using WCF services, which allow Silverlight applications to retrieve data from the web server by calling a carefully encapsulated piece of .NET code. However, WCF services won’t provide all the data you need to use. In many situations you’ll want to retrieve information from other non-.NET repositories, such as REST web services, RSS feeds, and ordinary HTML web pages.
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