用C# 写一个消息队列

在C#中，可以使用System.Messaging命名空间来创建和管理消息队列。以下是一个简单的消息队列示例:

1. 首先，需要添加System.Messaging引用:

using System.Messaging;

2. 创建一个消息队列:

MessageQueue messageQueue = null;

if (MessageQueue.Exists(@".\Private$\MyQueue"))
{
    messageQueue = new MessageQueue(@".\Private$\MyQueue");
}
else
{
    messageQueue = MessageQueue.Create(@".\Private$\MyQueue");
}

3. 发送消息到队列:

Message message = new Message();
message.Body = "Hello World!";
messageQueue.Send(message);

4. 从队列中接收消息:

Message message = messageQueue.Receive();
Console.WriteLine("Received message: " + message.Body.ToString());

5. 关闭消息队列:

messageQueue.Close();

完整的代码示例:

using System;
using System.Messaging;

namespace MessageQueueExample
{
    class Program
    {
        static void Main(string[] args)
        {
            MessageQueue messageQueue = null;

            if (MessageQueue.Exists(@".\Private$\MyQueue"))
            {
                messageQueue = new MessageQueue(@".\Private$\MyQueue");
            }
            else
            {
                messageQueue = MessageQueue.Create(@".\Private$\MyQueue");
            }

            Message message = new Message();
            message.Body = "Hello World!";
            messageQueue.Send(message);

            Message receivedMessage = messageQueue.Receive();
            Console.WriteLine("Received message: " + receivedMessage.Body.ToString());

            messageQueue.Close();

            Console.ReadLine();
        }
    }
}