如何侦听消息队列（MSMQ）。当消息队列中有消息出来时就显示在文本框中

[jiangwk23]

如何侦听消息队列（MSMQ）。当消息队列中有消息出来时就显示在文本框中

如题~~急

[jiangwk23]

up

[wuyq11]

通过msmq 触发器 实现
参考

[yuxianye1]

BeginReceive 事件处理

[yuxianye1]

using System;
using System.Messaging;

public class QueueExample
{
    public static void Main()
    {
        // Create a non-transactional queue on the local computer.
        // Note that the queue might not be immediately accessible, and
        // therefore this example might throw an exception of type
        // System.Messaging.MessageQueueException when trying to send a
        // message to the newly created queue.
        CreateQueue(".\\exampleQueue", false);

        // Connect to a queue on the local computer.
        MessageQueue queue = new MessageQueue(".\\exampleQueue");

        // Add an event handler for the ReceiveCompleted event.
        queue.ReceiveCompleted += new 
                ReceiveCompletedEventHandler(MyReceiveCompleted);

        // Send a message to the queue.
        queue.Send("Example Message");

        // Begin the asynchronous receive operation.
        queue.BeginReceive(TimeSpan.FromSeconds(10.0));

        // Simulate doing other work on the current thread.
        System.Threading.Thread.Sleep(TimeSpan.FromSeconds(10.0));

        return;
    }

    // Creates a new queue.
    public static void CreateQueue(string queuePath, bool transactional)
    {
        if(!MessageQueue.Exists(queuePath))
        {
            MessageQueue.Create(queuePath, transactional);
        }
        else
        {
            Console.WriteLine(queuePath + " already exists.");
        }
    }

    // Provides an event handler for the ReceiveCompleted event.
    private static void MyReceiveCompleted(Object source, 
        ReceiveCompletedEventArgs asyncResult)
    {
        // Connect to the queue.
        MessageQueue queue = (MessageQueue)source;

        // End the asynchronous receive operation.
        Message msg = queue.EndReceive(asyncResult.AsyncResult);

        // Display the message information on the screen.
        Console.WriteLine("Message body: {0}", (string)msg.Body);
    }
}

[贪玩的老鼠]

有两种方法
1. 使用消息队列的触发器就.
做个消息组件给消息触发器触发调用
2. 使用消息接收回调函数.
四楼给出了代码!!

[liuliunumberone]

我是根据楼上的做法做的，但是就是接收不到body怎么回事呢？