Nico Zhu - MSFT
2020-01-31 16:30
请检查此FocusManager 文件。它是一个帮助程序类，它可以对应用程序中所有元素之间的焦点动作和事件进行全局管理，而不是控件或页面的属性。以下是可以测试的演示代码。
private void Page_KeyUp(object sender, KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.Up)
{
// Mimic Shift+Tab when user hits up arrow key.
FocusManager.TryMoveFocus(FocusNavigationDirection.Previous);
}
else if (e.Key == Windows.System.VirtualKey.Down)
{
// Mimic Tab when user hits down arrow key.
FocusManager.TryMoveFocus(FocusNavigationDirection.Next);
}
}
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