private void RefreshCollections()
        {
            _creator = new ReportsCreator(SelectedPeriod);
            _creator.CreateOrders(Orders);
            _creator.CreateOrderedDishes(OrderedDishes);
            _creator.CreateBonusDishes(BonusDishes);

            Incomes      = _creator.GetIncomes();
            Costs        = _creator.GetCosts();
            Profit       = Incomes - Costs;
            DishesCount  = _creator.GetDishesCount();
            ClientsCount = _creator.GetClientsCount();
        }
        private void PrintButton_Click(object sender, RoutedEventArgs e)
        {
            ReportsCreator reports = new ReportsCreator();

            reports.MilReportEmployeesCreator(report);
        }