MSMQ - receivcompleted -异步处理消息

我正在使用BeginnReceive方法和ReceiveCompleted eventandler来监听和处理来自MSMQ的消息。

我已经把BeginReceive方法放在ReceiveCompleted事件处理程序的开头。

看起来在我的控制台应用程序中工作得很好。现在，消息是异步处理的。

问题:这是安全的线程安全吗?
我看到的所有示例都将BeginReceive调用放在完成的事件处理程序的末尾。所以我问自己，当把它放在完成的处理程序的开始时，是否有任何问题?

private void InitializeQueue()
{
    try
    {
        _mq = MessageQueue.GetPrivateQueuesByMachine(_queueServerName).Where(qu => qu.Path == _queueAddress).FirstOrDefault();
        _mq.Formatter = new BinaryMessageFormatter();
        _mq.ReceiveCompleted += MessageReceiveCompleted;
    }
    catch (Exception ex)
    {
        Trace.WriteLine("Failed to initialize Queue!" + Environment.NewLine + " Error:" + Environment.NewLine + ex.Message);
        throw;
    }
}

async void MessageReceiveCompleted(object sender, ReceiveCompletedEventArgs e)
{
    _mq.BeginReceive();
    try
    {    
        await ProcessMessageAsync(e.Message);
    }
    catch (Exception ex)
    {
        Trace.WriteLine("Error occured during report fetching:" + Environment.NewLine + ex.Message);
        throw;
    }
}