private void btnDelRowExcludedGroup_Click(object sender, RoutedEventArgs e)
{
Groups.Add(dgExcludedtGroup.SelectedItem as Group);
Groups = new ObservableCollection <Group>(Groups.OrderBy(i => i));
cmbAddRowTargetGroup.ItemsSource = Groups;
cmbAddRowExcludedGroup.ItemsSource = Groups;
ExcludedGroup.Remove(dgExcludedtGroup.SelectedItem as Group);
}
