问UWP滚动期间未关闭的AutoSuggestBox建议列表

EN

private void AutoSuggestBox_Loaded(object sender, RoutedEventArgs e)
{
    var popup = MyFindGridViewChildByName(sender as AutoSuggestBox, "SuggestionsPopup") as Popup;
    popup.ShouldConstrainToRootBounds = true;
}
public static DependencyObject MyFindGridViewChildByName(DependencyObject parant, string ControlName)
{
    int count = VisualTreeHelper.GetChildrenCount(parant);

    for (int i = 0; i < count; i++)
    {
        var MyChild = VisualTreeHelper.GetChild(parant, i);
        if (MyChild is FrameworkElement && ((FrameworkElement)MyChild).Name == ControlName)
            return MyChild;

        var FindResult = MyFindGridViewChildByName(MyChild, ControlName);
        if (FindResult != null)
            return FindResult;
    }

    return null;
}