Below is a C# Class that I use for interacting with MQSeries (reading/writing from/to queues). 

It contains 2 methods:
PutMessageOnQueue
GetMessageOffQueue

To use it, you must have IBM WebSphere MQ installed, and you must add an assembly reference to amqmdnet.dll (the .NET bindings that come with WebSphere MQ).

I am using:
.NET 2.0
VS 2005
WebSphere MQ 5.3.0




---


public class MQSeries
{
    string queueName;
    string queueManagerName;
   
    MQQueue queue;
    MQMessage queueMessage;
    MQQueueManager queueManager;
   

    public MQSeries()
    {
        queueName = "TESTQ";
        queueManagerName = "TESTQM";
        queueManager = new MQQueueManager(queueManagerName);
    }  


    public void PutMessageOnQueue(string message)
    {
        try
        {
            queue = queueManager.AccessQueue(queueName,
                    MQC.MQOO_OUTPUT + MQC.MQOO_FAIL_IF_QUIESCING);
            queueMessage = new MQMessage();
            queueMessage.WriteString(message);
            queueMessage.Format = MQC.MQFMT_STRING;

            queue.Put(queueMessage);
        }
        catch (MQException mqexp)
        {
            Console.WriteLine("MQSeries Exception: " + mqexp.Message);
        }
    }


    public string GetMessageOffQueue()
    {
        string message = "";
       
        queue = queueManager.AccessQueue(queueName,
                MQC.MQOO_INPUT_AS_Q_DEF + MQC.MQOO_FAIL_IF_QUIESCING);
        queueMessage = new MQMessage();
        queueMessage.Format = MQC.MQFMT_STRING;

        try
        {
            queue.Get(queueMessage);
            message = queueMessage.ReadString(queueMessage.MessageLength);
        }
        catch (MQException MQExp)
        {
            Console.WriteLine("MQQueue::Get ended with " + MQExp.Message);
        }

        return message;
    }

}