How to update message before it's delivered

Question

I am queuing a bunch of messages, and the queue eventually delivers the messages as records into a sql server database. I need to update the message to display the datetime at which the message is going to be delivered. As I am thinking about this, my request does not sound logical; however, is there a way or is there an event to which I can subscribe to get the datetime right before the message is delivered?

var msgQ = new MessageQueue(_myque);
msgTx.Begin();
msgQ.Send(message, msgTx);
msgTx.Commit();

Please note that I am unable to make any changes to the database, and would need to solve this through .NET code. 

Answer 1

以下示例将消息推送到消息队列，然后在一小段延迟后接收：

首先，要发送的消息：

public class Order
{
    public int orderId;
    public DateTime orderDate;
    public DateTime receivedDate;
};

发送一个新的Order，稍等一下，然后从队列中接收它：

// a private queue - set to applicable queue path.
var myQueue = new MessageQueue(".\\private$\\myQueue");

myQueue.Send(new Order { orderId = 1, orderDate = DateTime.Now});

// a 10 second delay to demonstrate an infrastructure 
// delay between the send and receive   
Thread.Sleep(new TimeSpan(0, 0, 10));

var message = myQueue.Receive();

var receivedOrder = (Order)message.Body;
receivedOrder.receivedDate = DateTime.Now;  

Console.WriteLine(string.Format("Order {0} sent at {1}, received at {2}", receivedOrder.orderId, receivedOrder.orderDate, receivedOrder.receivedDate));