public MainPageViewModel() { var tweet = new Tweet(); SendTweetCommand = new DelegateCommand(() => tweet.TestTweet(TweetContents)); SendHelloTweetCommand = new DelegateCommand(() => tweet.SayHelloTwitter()); RetweetCommand = new DelegateCommand(() => tweet.Retweet(839485449638903808)); UnRetweetCommand = new DelegateCommand(() => tweet.UnRetweet(839485449638903808)); FavoriteCommand = new DelegateCommand(() => tweet.Favorite(839485449638903808)); UnFavoriteCommand = new DelegateCommand(() => tweet.UnFavorite(839485449638903808)); }