/// <summary>
        /// Implementa Undo_button_Click
        /// </summary>
        protected override void CancelAction()
        {
            if (!IsModal)
            {
                _entity.CancelEdit();
            }
            _action_result = DialogResult.Cancel;

            Cerrar();
        }
 protected override void CancelAction()
 {
     _entity.CancelEdit();
     _entity.CloseSession();
     Close();
 }