private void EnsureScrollBars()
    {
        int currentPage = SelectedPageIndex.HasValue ? SelectedPageIndex.Value - 1 : 0;

        try
        {
            _isSettingPageVisibility = true;

            // There's a bug in VirtualizingStackPanel. Scroll bars do not display correctly
            // This hack fixes that by scrolling into view a page that's not realised
            if (currentPage >= GetMinPageIndex() && currentPage <= GetMaxPageIndex())
            {
                // Current page is realised
                if (currentPage != 0)
                {
                    ScrollIntoView(0);
                }
                else if (currentPage != PageCount - 1)
                {
                    ScrollIntoView(PageCount - 1);
                }
            }
        }
        finally
        {
            _isSettingPageVisibility = false;

            ScrollIntoView(currentPage);
        }
    }