How to detect ListView is scrolling up or down

Question

Is there a way to detect that ScrollViwer of ListView is in scrolling mode and stopped scrolling. In windows phone 8.1 ListView we can

Answer 1

You can find the ScrollViewer of your ListView by using VisualTreeHelper. For example like this:

// method to pull out a ScrollViewer
public static ScrollViewer GetScrollViewer(DependencyObject depObj)
{
    if (depObj is ScrollViewer) return depObj as ScrollViewer;

    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
    {
        var child = VisualTreeHelper.GetChild(depObj, i);

        var result = GetScrollViewer(child);
        if (result != null) return result;
    }
    return null;
}

Once you have a ScrollViewer you can subscribe to its events:

GetScrollViewer(yourListView).ViewChanged += yourEvent_ViewChanged;