public static void DeleteByDamage(int id)
            {
                using (var unitOfWork = new UnitOfWork())
                {
                    using (var items = new XPCollection <DB.OrderDamages>(unitOfWork))
                    {
                        var dbItems = items.Where(u => u.Damage.Id == id).ToArray();

                        items.DeleteObjectOnRemove = true;
                        for (var i = 0; i < dbItems.Length; i++)
                        {
                            var dbItem = dbItems[i];
                            Damages.Delete(dbItem.Damage.Id, unitOfWork);
                            items.Remove(dbItem);
                        }
                    }
                    unitOfWork.CommitChanges();
                }
            }