public override System.Windows.Style SelectStyle(object item, System.Windows.DependencyObject container)

        {

            if (ContainerStyle1 == null)

                return null;

            TCheckListBoxItem citem = container as TCheckListBoxItem;

            TCheckListBox listView = ItemsControl.ItemsControlFromItemContainer(container) as TCheckListBox;

            int index =listView.ItemContainerGenerator.IndexFromContainer(container);

            if (index %  == )

            {

                citem.IsOddIndex = true;

                //IsOddIndex.Value = true;

            }

            else

            {

                citem.IsOddIndex = false;

               // IsOddIndex.Value = false;

            }

            return ContainerStyle1;

        }