MSMQ(3)创建、同步异步接收消息

一、创建一个队列

 if (!MessageQueue.Exists(".\\Private$\\newPublicQueue"))
        {
           // MessageQueue.Create(".\\newPublicQueue");//创建一个公共队列
            MessageQueue.Create(".\\Private$\\newPublicQueue");//创建一个私有队列
        }

二、同步接收消息

1）接收消息，接受成功后删除

 MessageQueue queue = new MessageQueue(".\\Private$\\newPublicQueue");

        Message message = queue.Receive();// Receive message, 同步的Receive方法阻塞当前执行线程，直到一个message可以得到，接收之后就删除
        message.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
        this.TextBox2.Text = message.Body.ToString();

2）接受消息，接收成功后保留

  MessageQueue queue = new MessageQueue(".\\Private$\\newPublicQueue");

        Message message = queue.Peek();// 异步接收消息。接收之后不删除
        message.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
        this.TextBox4.Text = message.Body.ToString();

三、异步接收消息
1）接收消息，接受成功后删除

 MessageQueue queue = new MessageQueue(".\\Private$\\newPublicQueue");

        // queue.BeginReceive();// 异步接收消息。接收之后就删除
        // 给接收结束加一个委托
        queue.ReceiveCompleted +=
            new ReceiveCompletedEventHandler(MyReceiveCompleted);

        //开始接收
        queue.BeginReceive();
private static void MyReceiveCompleted(Object source, 
            ReceiveCompletedEventArgs asyncResult)
        {
            try
            {
                // Connect to the queue.
                MessageQueue mq = (MessageQueue)source;

                // End the asynchronous receive operation.
                Message m = mq.EndReceive(asyncResult.AsyncResult);
                m.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
                System.IO.StreamWriter fs1 = new System.IO.StreamWriter("e:\\11.txt", false, System.Text.Encoding.Default);// System.IO.File.CreateText("c:\\testAsyn.txt");
                fs1.WriteLine(m.Body.ToString());
                fs1.Close();

                count += 1;
                if (count == 2)
                {
                    signal.Set();
                }

                // Restart the asynchronous receive operation.
                mq.BeginReceive();
            }
            catch(MessageQueueException)
            {
                // Handle sources of MessageQueueException.
            }
            
        
            
            return; 
        }

2）接受消息，接收成功后保留

 MessageQueue queue1 = new MessageQueue(".\\Private$\\newPublicQueue");

        // queue.BeginReceive();// 异步接收消息。接收之后就删除
        // 给接收结束加一个委托
        queue1.PeekCompleted +=
            new PeekCompletedEventHandler(PeekMyReceiveCompleted);

        //开始接收
        queue1.BeginPeek();
private static void PeekMyReceiveCompleted(Object source,
           PeekCompletedEventArgs asyncResult)
    {
        try
        {
            // Connect to the queue.
            MessageQueue mq = (MessageQueue)source;

            // End the asynchronous receive operation.
            Message m = mq.EndPeek(asyncResult.AsyncResult);
            m.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
            System.IO.StreamWriter fs1 = new System.IO.StreamWriter("e:\\22.txt", false, System.Text.Encoding.Default);// System.IO.File.CreateText("c:\\testAsyn.txt");
            fs1.WriteLine(m.Body.ToString());
            fs1.Close();

            count += 1;
            if (count == 2)
            {
                signal.Set();
            }

            // Restart the asynchronous receive operation.
            mq.BeginPeek();
        }
        catch (MessageQueueException)
        {
            // Handle sources of MessageQueueException.
        }



        return;
    }

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