Message does not reach MSMQ when made transactional

Question

I have a private MSMQ created in my local machine. I am sending messages to the queue using following C# code. When I changed the queue to be transactional, the message is not reaching the MSMQ. However, there is no exception thrown in the Send method. What change I need to make in order to make it working?

using System;
using System.Messaging;
using System.Data;

public partial class _Default : System.Web.UI.Page
{
    //Sharing violation resulted from queue being open already for exclusive receive.
    MessageQueue helpRequestQueue = new MessageQueue(@".\Private$\MyPrivateQueue", false);
    protected void Page_Load(object sender, EventArgs e)
    {   
        bool isTransactionalQueue = false;    
        if (!System.Messaging.MessageQueue.Exists(@".\Private$\MyPrivateQueue"))    
        {    
            System.Messaging.MessageQueue.Create(@".\Private$\MyPrivateQueue", isTransactionalQueue);    
        }    
        SendMessage();    
        GetAllMessages();    
    }


    private void SendMessage()    
    {    
        System.Messaging.Message theMessage = new System.Messaging.Message("TimeNow is "+DateTime.Now.ToString());

        theMessage.Label = "Lijo " + DateTime.Now.ToString();

        theMessage.Priority = System.Messaging.MessagePriority.Normal;

        helpRequestQueue.Send(theMessage);    

    }


    private void GetAllMessages()   
    {    
        DataTable messageTable = new DataTable();    
        messageTable.Columns.Add("Label");    
        messageTable.Columns.Add("Body");        


        //Set Message Filters    
        MessagePropertyFilter filter = new MessagePropertyFilter();    
        filter.ClearAll();    
        filter.Body = true;    
        filter.Label = true;    
        filter.Priority = true;
        helpRequestQueue.MessageReadPropertyFilter = filter;

        //Get All Messages    
        System.Messaging.Message[] messages = helpRequestQueue.GetAllMessages();    
        System.Messaging.XmlMessageFormatter stringFormatter = new System.Messaging.XmlMessageFormatter(new string[] { "System.String" });


        for (int index = 0; index < messages.Length; index++)    
        {    
            string test = System.Convert.ToString(messages[index].Priority);
            messages[index].Formatter = stringFormatter;    
            messageTable.Rows.Add(new string[] {messages[index].Label,messages[index].Body.ToString() });

        }


        Gridview1.DataSource = messageTable;    
        Gridview1.DataBind();    
    }    

    private void ReceiveAndProcess()    
    {



    }           
}

Answer 1

For queue's that you have created as transanctional, you must use the version of Send() that includes the MessageQueueTransactionType parameter. The biggest frustration with this is that it doesn't throw any exceptions or errors as you have seen, but the message just doesn't ever show up.

So, in your code, change:

helpRequestQueue.Send(theMessage); 

to

helpRequestQueue.Send(theMessage, MessageQueueTransactionType.Single); 

Edit: My answer is just another way to do it aside from David's.