private void RefreshButton_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
var viewModel = DataContext as RedditViewModel;
if (viewModel != null)
{
var message = new RefreshSubredditMessage();
message.Subreddit = viewModel.SelectedSubreddit;
Messenger.Default.Send<RefreshSubredditMessage>(message);
}
}