public void UpdateInventPrinter(ArrayList printers, string itemNum) { foreach (Printer o in printers) { if (o.isDelete == true && o.isNew == false) { getGui.DeleteInventPrinter(StaticClass.storeId, itemNum, o.PrinterName); } else if (o.isDelete == false && o.isNew == true) { getGui.InsertInventPrinter(StaticClass.storeId, itemNum, o.PrinterName, "123"); } } }