/// <summary>
    /// 消息实体
    /// </summary>
    [Serializable]
    public class MsmqData
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

 /// <summary>
    /// 消息队列管理对象
    /// </summary>
    public class MSMQManager
    {
        /// <summary>
        /// 消息队列地址
        /// </summary>
        public string _path;
        /// <summary>
        /// 消息队列对象
        /// </summary>
        public MessageQueue _msmq;

        /// <summary>
        /// 构造函数并初始化消息队列对象
        /// </summary>
        /// <param name="path"></param>
        public MSMQManager(string path = null)
        {
            if (string.IsNullOrEmpty(path))
            {
                _path = ConfigurationManager.AppSettings["MsmqPath"].ToString();
            }
            else
            {
                _path = path;
            }
            if (MessageQueue.Exists(_path))
            {
                _msmq = new MessageQueue(_path);
            }
            else
            {
                _msmq = MessageQueue.Create(_path);
            }
        }

        /// <summary>
        /// 发送消息队列
        /// </summary>
        /// <param name="body"></param>
        public void Send(object body)
        {
            _msmq.Send(new Message(body, new XmlMessageFormatter(new Type[] { typeof(MsmqData) })));
        }

        /// <summary>
        /// 接受队列中第一个消息后删除
        /// </summary>
        /// <returns></returns>
        public object ReceiveMessage()
        {
            var msg = _msmq.Receive();
            if (msg != null)
            {
                //msg.Formatter = new BinaryMessageFormatter();
                msg.Formatter = new XmlMessageFormatter(new Type[] { typeof(MsmqData) });
                var body = (MsmqData)msg.Body;
                Console.WriteLine("消息内容：{0},{1}", body.Id, body.Name);
                return msg.Body;
            }
            return null;
        }

        /// <summary>
        /// 遍历消息队列中的消息并删除
        /// </summary>
        public void WriteAllMessage()
        {
            var enumerator = _msmq.GetMessageEnumerator2();
            while (enumerator.MoveNext())
            {
                Message msg = (Message)(enumerator.Current);
                //msg.Formatter = new BinaryMessageFormatter();
                msg.Formatter = new XmlMessageFormatter(new Type[] { typeof(MsmqData) });
                var body = (MsmqData)msg.Body;
                Console.WriteLine("消息内容：{0},{1}", body.Id, body.Name);
                //根据消息ID查询并删除消息队列
                _msmq.ReceiveById(msg.Id);

            }
        }
    }

        static void Main(string[] args)
        {
            var msmqManager = new MSMQManager();
            for (int i = 1; i <= 10; i++)
            {
                MsmqData data = new MsmqData() { Id = i, Name = string.Format("Name{0}", i) };
                //发送消息
                msmqManager.Send(data);
            }
            var msg = msmqManager.ReceiveMessage();
            msmqManager.WriteAllMessage();
            Console.ReadLine();
        }

  <appSettings>
    <add key="MsmqPath" value=".\private$\myQueue"/>
  </appSettings>