public string SendOrder(SalesRecord record) { string message = ""; if (!aGateway.IsSellOrderAlreadyExist(record)) { int msg = aGateway.SendOrder(record); if (msg > 0) { message = "Order has been successfully sent"; } else { message = "failed to send order"; } } else { message = "You have sent order already for this product"; } return(message); }