在Windows 8中自动翻转图片

我有一个翻转视图，我希望它每隔n秒自动更改图像，而不会让用户选择向右或向左单击。

Answer 1

使用DispatcherTimer来控制更改图像的时间间隔，并在FlipView上设置SelectedIndex属性（按名称 – 或者如果您使用的是MVVM，则在viewmodel上设置绑定到SelectedIndex的属性）。

编辑

这是一个使用文本块而不是图像的示例（ FlipView项目中的内容与执行操作无关）。

MainPage.xaml中

MainPage.xaml.cs中

 using System; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Navigation; namespace App1 { /// 
 /// An empty page that can be used on its own or navigated to within a Frame. /// 
 public sealed partial class MainPage { //Make a place to store the timer private readonly DispatcherTimer _timer; //Make a place to store the last time the displayed item was set private DateTime _lastChange; public MainPage() { InitializeComponent(); //Configure the timer _timer = new DispatcherTimer { //Set the interval between ticks (in this case 2 seconds to see it working) Interval = TimeSpan.FromSeconds(2) }; //Change what's displayed when the timer ticks _timer.Tick += ChangeImage; //Start the timer _timer.Start(); } /// 
 /// Changes the image when the timer ticks /// 
 ///  ///  private void ChangeImage(object sender, object o) { //Get the number of items in the flip view var totalItems = TheFlipView.Items.Count; //Figure out the new item's index (the current index plus one, if the next item would be out of range, go back to zero) var newItemIndex = (TheFlipView.SelectedIndex + 1) % totalItems; //Set the displayed item's index on the flip view TheFlipView.SelectedIndex = newItemIndex; } /// 
 /// Invoked when this page is about to be displayed in a Frame. /// 
 /// Event data that describes how this page was reached. The Parameter /// property is typically used to configure the page. protected override void OnNavigatedTo(NavigationEventArgs e) { } /// 
 /// When the user changes the item displayed manually, reset the timer so we don't advance at the remainder of the last interval /// 
 ///  ///  private void DisplayedItemChanged(object sender, SelectionChangedEventArgs e) { //Show the time deltas... var currentTime = DateTime.Now; if (_lastChange != default(DateTime)) { TimeDelta.Text = (currentTime - _lastChange).ToString(); } _lastChange = currentTime; //Since the page is configured before the timer is, check to make sure that we've actually got a timer if (!ReferenceEquals(_timer, null)) { _timer.Stop(); _timer.Start(); } } } }