Foursquare - OAuth Authentication - .Net Sample

Is there any sample on how to authenticate to Foursquare using Oa开发者_JAVA技巧uth ?

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There a very nice workflow summary for how to use OAuth with Foursquare here: http://developer.foursquare.com/docs/oauth.html

Once you get authenticated with OAuth, you can start making foursquare API calls: http://developer.foursquare.com/docs/overview.html