public void ShowOrderDeleteForm() { if (MessageBox.Show("Czy chcesz usunąć zamówienie?", "Wypożyczalnia", MessageBoxButtons.YesNo) == DialogResult.Yes) { Zamówienie order = orders.GetActiveElement(); OrderForm form = new OrderForm(order); OrderFormController formController = new OrderFormController(form, Operation.Delete); formController.OrderQuery = queriesOrder; formController.WarehouseQuery = queriesWarehouse; formController.Delete(); dr = DialogResult.OK; ReloadIfFormReturnedOK(); } }