protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
var eEventArgs = new PreviewSelectionChangedEventArgs(e.AddedItems, e.RemovedItems);
if (m_lLastSelectedIndex.HasValue)
{
PreviewSelectionChanged?.Invoke(this, eEventArgs);
}
if (eEventArgs.Cancel)
{
this.SelectedIndex = m_lLastSelectedIndex.Value;
}
else
{
m_lLastSelectedIndex = this.SelectedIndex;
}
}
private void Item_PreviewSelectionChanged(object sender, VisualObjectSelectionChangedEventArgs e) => PreviewSelectionChanged?.Invoke(this, e);
