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copied!<p>WMI was the answer! Here's a first pass at the code. It could doubtless be improved.</p> <pre><code>public int GetMessageCount(string queuePath) { const string query = "select * from Win32_PerfRawData_MSMQ_MSMQQueue"; var query = new WqlObjectQuery(query); var searcher = new ManagementObjectSearcher(query); var queues = searcher.Get(); foreach (ManagementObject queue in queues) { var name = queue["Name"].ToString(); if (AreTheSameQueue(queuePath, name)) { // Depending on the machine (32/64-bit), this value is a different type. // Casting directly to UInt64 or UInt32 only works on the relative CPU architecture. // To work around this run-time unknown, convert to string and then parse to int. var countAsString = queue["MessagesInQueue"].ToString(); var messageCount = int.Parse(countAsString); return messageCount; } } return 0; } private static bool AreTheSameQueue(string path1, string path2) { // Tests whether two queue paths are equivalent, accounting for differences // in case and length (if one path was truncated, for example by WMI). string sanitizedPath1 = Sanitize(path1); string sanitizedPath2 = Sanitize(path2); if (sanitizedPath1.Length > sanitizedPath2.Length) { return sanitizedPath1.StartsWith(sanitizedPath2); } if (sanitizedPath1.Length < sanitizedPath2.Length) { return sanitizedPath2.StartsWith(sanitizedPath1); } return sanitizedPath1 == sanitizedPath2; } private static string Sanitize(string queueName) { var machineName = Environment.MachineName.ToLowerInvariant(); return queueName.ToLowerInvariant().Replace(machineName, "."); } </code></pre>

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