private void OnPropertiesListChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.NewItems != null)
{
foreach (InstrumentProperty ip in e.NewItems.OfType <InstrumentProperty>())
{
ip.InstrumentID = _instance.ID;
PropertiesToAdd.Add(ip);
}
}
if (e.OldItems != null)
{
PropertiesToRemove.AddRange(e.OldItems.OfType <InstrumentProperty>());
}
}
