AutoSuggestBox sugestion lists not closing during scroll in UWP

问题

AutoSuggestBox suggestion list aren't closing during scroll which causes weird UI issue. The issue will look like the one below, which i have taken from the default XAML Controls Gallery application.

A simple AutoSuggestBox i have tested

<AutoSuggestBox TextChanged="AutoSuggestBox_TextChanged" Width="300" />

Is there a better way to fix this other than using ScrollViewer.ViewChanged

回答1:

AutoSuggestBox sugestion lists not closing during scroll in UWP

We could not set the Popup IsLightDismissEnabled as true, it will cause the popup could not display the content stable. I check your screenshot, you could set ShouldConstrainToRootBounds for Pupup control to avoid the list go though the bounds.

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;
}

来源：https://stackoverflow.com/questions/58707561/autosuggestbox-sugestion-lists-not-closing-during-scroll-in-uwp

标签

uwp

uwp-xaml