How do you get the MessageCount from an MSMQ Queue in .NET?

Question

Using COM you can get the MessageCount property of a queue. I can achieve the same thing with the MSMQ.Interop, but I was wondering if there is any way to do this with a pure .NET approach?

Unfortunately Microsoft screwed up here and forgot to implement a MessageQueue.MessageCount property. The only API in .NET is the .GetAllMessages() method but this offers very poor performance if you have tens of thousands of messages in your queue. The only real choices at the moment are WMI, COM, or implementing your own custom technique of enumerating and peeking at the message while incrementing a counter. Some alternative are mentioned here: http://stackoverflow.com/questions/3869022/is-there-a-way-to-check-how-many-messages-are-in-a-msmq-queue — Randy Burden, May 09 '12 at 23:54

score 0 · Answer 1 · answered Oct 12 '12 at 18:34

Sure! You can use LINQ it's fast and simple

            int Total = 0;
            using (var queue = new MessageQueue("queue_name", QueueAccessMode.ReceiveAndAdmin))
            {
                Total = (from Message msg in queue
                         select msg).Count();
            }

score 0 · Answer 2 · edited Feb 10 '14 at 22:35

0

Sure, using WMI:

Select * From Win32_PerfRawData_MSMQ_MSMQQueue

edited Feb 10 '14 at 22:35

hichris123

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answered Sep 22 '09 at 18:04

lod3n

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Unfortunately when using this method the queue names get truncated to 64 characters which for most, can make this option unusable. See: http://connect.microsoft.com/VisualStudio/feedback/details/91525/system-daignostics-performancecounter-fails-when-using-instance-name-64-characters – Randy Burden May 10 '12 at 00:03

rhatwar007 · Answer 3 · 2014-07-04T13:15:34.633

this is fastest method to calculate message inside private queues.

    //using System.Diagnostics
    int messageCount =0;
    private MessageQueue[] privatequeuelist = MessageQueue.GetPrivateQueuesByMachine(Dns.GetHostName());
    foreach(var Queue in MessageQueue)
    {
        string fullyQualifiedQueueName = string.Format(@"{0}\{1}", Environment.MachineName, Queue.QueueName);
        PerformanceCounterCategory category = new PerformanceCounterCategory("MSMQ Queue");
        PerformanceCounter cntr = new PerformanceCounter("MSMQ Queue", "Messages in Queue");
        if (category.InstanceExists(fullyQualifiedQueueName.ToLower()))
            {
                cntr.InstanceName = fullyQualifiedQueueName.ToLower(CultureInfo.CurrentCulture);
                messageCount = (int)cntr.NextValue();
            }
        Console.WriteLine(Queue.QueueName + "===" + messageCount);
     }
     Console.ReadLine();

How do you get the MessageCount from an MSMQ Queue in .NET?

3 Answers3