Facebook released the Graph API at the F8 conference in April 2010. The API was intended to provide a more unified way for Facebook to provide content to application developers, but it was not nearly as complete as the older REST-based API. Consequently, to achieve the same functionality as the older REST API, you will still need to work with it in some areas. To do so, Microsoft has provided an API called the Facebook Developer Toolkit, available via CodePlex.
How to Interoperate with the Facebook Developers Toolkit
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