如何使用C#和VB发送和接收MSMQ消息

 

在这篇博客中，我们将就如何实现System.Messaging类发送和接收的XML消息发送从MSMQ队列，你可能会遇到接收的XML消息的一些问题。

我们将首先加入参考System.Messaging DLL。 DLL的路径是：
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\Profile\Client\

发送消息到MSMQ队列

Load XML message content:
XmlDocument xd = new XmlDocument();
xd.Load(@"c:\temp\myxml.xml"); 
Create a new message using the following code:
System.Messaging.Message msg = new System.Messaging.Message();

Set the message label and message body:
msg.Label = "TestMessage"; msg.Body = xd.InnerXml;

msg.UseDeadLetterQueue = true;  // to send the message to the dead letter queue in case if there is some issue while sending.

Create an object of the queue to which you want to send the message:
MessageQueue msgQ = new MessageQueue(".\\private$\\QueueName"); 

Use send() function to send the message msgQ.Send(msg);

The corresponding code in VB is as follows:
Dim xd As New XmlDocument() xd.Load("c:\temp\myxml.xml")
Dim msg As New System.Messaging.Message()
msg.Label = "TestMessage"
msg.Body = xd.InnerXml
msg.UseDeadLetterQueue = True
Dim msgQ As New MessageQueue(".\private$\QueueName ")
msgQ.Send(msg)

您将看到消息队列

注：

<String> Wrapper and <?xml version="1.0"?>

在MSMQ接收消息

创建消息并从要接收消息队列的对象：

MessageQueue msgQ = new MessageQueue(".\\private$\\QueueName");
System.Messaging.Message m = new System.Messaging.Message();

Use receive() function to receive the message:
m = msgQ.Receive();

Use XMLMessageFormatter to receive the message without the string wrapper.

m.Formatter = new XmlMessageFormatter(new String[] {"System.String,mscorlib"});
string text = m.Body.ToString();

Save the message to the file location to test:
XmlDocument xml = new XmlDocument();
xml.LoadXml(text);
xml.Save(@"c:\temp\myxml.xml"); 

在VB对应的代码如下：

Dim m As New System.Messaging.Message()
Dim msgQ As New MessageQueue(".\private$\Testpgm")
m = msgQ.Receive()
m.Formatter = New XmlMessageFormatter(New [String]() {"System.String,mscorlib"})
Dim text As String = m.Body.ToString()
Dim xml As New XmlDocument()
xml.LoadXml(text)
xml.Save("c:\temp\myxml.xml")

获取包装信息：

为了获得给XMLMessageFormatter的不具有一个<刺>包装，使用ActiveXMessageFormatter（消息），而不是（）。

我附上供参考样品溶液。

样品片段发送\接收信息到远程MSMQ队列：

//发送到公众非事务性队列

公共无效SendPublicNonTx（）
{
MessageQueue myQueue中=新MessageQueue（）;
myQueue.Path =“计算机名\\ testntx”;
myQueue.Send（“队列格式名称。”）;
返回;

}

//Sending to Public Non-Transactional queue

public void SendPublicNonTx()
        { 
MessageQueue myQueue = new MessageQueue();         
myQueue.Path = "machinename\\testntx";                       
myQueue.Send("Queue by format name.");           
return;

        }

//Sending to Public Non-Transactional queue

public void SendPublicNonTx()
        {           
MessageQueue myQueue = new MessageQueue("FormatName:Public=8FC22E24-C378-4F9A-91FC-550785FC495E");           
myQueue.Send("Queue by format name.");           
return;
        }
//Sending to Private Transactional queue
public void SendPrivateTx() 
        {           
MessageQueue rmQ = new MessageQueue("FormatName:Direct=OS:machinename\\private$\\testq");
            rmQ.Send("message", MessageQueueTransactionType.Single);
        }

//Sending to Private Non-Transactional queue
        public void SendPrivateNonTx()
        { 
            MessageQueue myQueue = new MessageQueue(@"FormatName:Direct=OS:machinename\private$\testNontx");
            myQueue.Send("my message");
            return;
        }

//Sending to Public Transactional queue
        public void SendPublicTx()
        { 
MessageQueue myQueue = new MessageQueue("FormatName:Public= 09BA7806-2FBA-443C-880A-A60D525A0F53"); // we are using the guid to identify the queue.           
myQueue.Send("Queue by format name.", MessageQueueTransactionType.Single);           
return;
        }
//Reading from Remote Public queue:
private void GetFromPublicQueue()
        {           
            MessageQueue mQ = new MessageQueue("FormatName:Public=8FC22E24-C378-4F9A-91FC-550785FC495E"); 
            mQ.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
            System.Messaging.Message msg = mQ.Receive();
            MessageBox.Show(msg.Body.ToString());           
            MessageQueue rmTxQ = new MessageQueue("FormatName:Public= 09BA7806-2FBA-443C-880A-A60D525A0F53");
            mTxQ.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
            System.Messaging.Message msgTx = mTxQ.Receive(MessageQueueTransactionType.Single);           
            MessageBox.Show(msgTx.Body.ToString());

//Reading from Remote Private queue:
private void GetFromQueue() 
        {            
            MessageQueue mQ = new MessageQueue("FormatName:Direct=OS:machinename\\private$\\testNontx");
            mQ.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });            
            System.Messaging.Message msg = mQ.Receive();            
            MessageBox.Show(msg.Body.ToString());           
            MessageQueue mTxQ = new MessageQueue("FormatName:Direct=OS:machinename\\private$\\testq");
            mTxQ.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
            System.Messaging.Message msgTx = mTxQ.Receive(MessageQueueTransactionType.Single);
            MessageBox.Show(msgTx.Body.ToString());

            MessageQueue mTxQ = new MessageQueue("FormatName:Direct=OS:machinename\\private$\\testq");
            mTxQ.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) }); 
            System.Messaging.Message msgTx = mTxQ.Receive(MessageQueueTransactionType.Single); 
            MessageBox.Show(msgTx.Body.ToString());