public void Initialize()
 {
     System.Diagnostics.Debug.WriteLine("GridViewAndNavigationMainViewModel.Initialize");
     var repository = new DemoItemStaticRepository();
     var source = new DemoItemRepositorySource(repository);
     _items = new IncrementalLoadingCollection<DemoItem>(source);
 }
 public void Initialize()
 {
     var repository = new DemoItemStaticRepository();
     var source = new DemoItemRepositorySource(repository);
     _items = new IncrementalLoadingCollection<DemoItem>(source);
 }