Cannot determine whether a queue with the specified format name exists

Question

I get the exception when executing the following code. Any ideas what is wrong?

string queueName = \"FormatName:Direct=TCP:1.1.1.1\\\\Private$\\\\test\";
Message         


        

Answer 1

You cannot use the Exists method on a remote queue, so you have to impersonate a user on that remote machine:

//usings
using System;
using System.Messaging;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Principal;

//Declaring the advapi32.dll
 [DllImport("advapi32.dll", SetLastError = true)]
    public static extern bool LogonUser(
            string lpszUsername,
            string lpszDomain,
            string lpszPassword,
            int dwLogonType,
            int dwLogonProvider,
            out IntPtr phToken);

private void IterateRemoteMQ()
    {
        IntPtr userToken = IntPtr.Zero;

        bool success = LogonUser(
          "REMOTE_USERNAME", //Username on the remote machine
          ".",  //Domain, if not using AD, Leave it at "."
          "PASSWORD",  //Password for the username on the remote machine
          9, //Means we're using new credentials, otherwise it will try to impersonate a local user
          0,
          out userToken);

        if (!success)
        {
            throw new SecurityException("Logon user failed");
        }
        //Go through each queue to see if yours exists, or do some operation on that queue.
        using (WindowsIdentity.Impersonate(userToken))
        {
            MessageQueue[] Queues = MessageQueue.GetPrivateQueuesByMachine("192.168.1.10");
            foreach (MessageQueue mq in Queues)
            {
                string MSMQ_Name = mq.QueueName;
            }
        }