public void Init() { //TODO: observeOn https://www.nuget.org/packages/Rx-WindowStoreApps/ var usersObservable = _getUserListInteractor.Execute(); usersObservable.Subscribe(users => { CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { Users = new ObservableCollection <User>(users); }); }); }