private void DataSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (Users item in e.NewItems)
{
BL_Users.Save(item);
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (Users item in e.OldItems)
{
BL_Users.Delete(item);
}
break;
}
}