public override View GetSampleContent(Context context)
 {
     pullToRefresh = new SfPullToRefresh(context);
     pullToRefresh.TransitionType = TransitionType.Push;
     pullToRefresh.Refreshing    += Pull_Refreshing;
     listView         = new ListView(context);
     repository       = new InboxRepositiory();
     adapter          = new CustomBaseAdapter((Activity)context, repository.InboxItems);
     listView.Adapter = adapter;
     pullToRefresh.PullableContent = listView;
     return(pullToRefresh);
 }
 public CollectionViewSource() : base()
 {
     repository = new InboxRepositiory();
     items      = repository.InboxItems;
 }