rabbitmqctl add_vhost /els
rabbitmqctl delete_user guest
rabbitmqctl add_user gavin gavin
rabbitmqctl authenticate_user gavin gavin
rabbitmqctl set_permissions -p /els gavin "^gavin-.*" ".*" ".*"

QueueDeclareOk ok = _channel.QueueDeclare("Ping", durable, exclusive, autoDelete, null);

The AMQP operation was interrupted: AMQP close-reason, initiated by Peer, code=403, text="ACCESS_REFUSED - access to queue 'Ping' in vhost '/els' refused for user 'gavin'", classId=50, methodId=10, cause=

//if queue exists or not, this will return 0 if there are no messages in the queue.
QueueDeclareOk ok = _channel.QueueDeclare(queue, durable, exclusive, autoDelete, null);
//returns the number of messages in Ready state in the queue
if (ok.MessageCount > 0)
    Console.WriteLine($" ## {queue} has {ok.MessageCount} messages in it's queue. ##");

//create a call back consumer
AsyncEventingBasicConsumer consumer = new AsyncEventingBasicConsumer(_channel);

//method to bind callback to.
consumer.Received += Consumer_Received;

//consume existing and future messages
string consumerTag = _channel.BasicConsume(queue: queue.ToString(),
                        autoAck: autoAck,
                        consumer: consumer);

//add to dictionary so it can be cancel
_consumerTag.Add(queue, consumerTag);