Firebase滚动以在ionic2中加载更多数据

Question

我是firebase的新手。如何使用firebase数据库滚动加载ionic2中的更多数据。我尝试了很多例子，但没有找到任何解决方案。

我用public class UserControllerTest { [Test] public async Task TestIndex() { //arrange Mock<IRequestManager> requestManager = new Mock<IRequestManager>(); //setup what you want here... UserController sut = new UserController(requestManager.Object);//suggest to use AutoMoqer for this. //act var view = await sut.Index() as ActionResult; //assert Assert.That(view is ViewResult); Assert.That(view.Model is List<UserViewModel>); } } 但没有奏效。请帮助我.... 见下图。我已经要求提供以下数据。 谢谢