MQSeries.net :: View topic - Visual studio .net and mqseries com interface Get call fails

flowbe · Posted: Mon May 27, 2002 2:16 pm Post subject:

Hi,

Has anyone successfully used the mqseries com interfaces in any .net language?
I have been trying to work with it in c# and can get to the interface fine and send messages to the queue however when I try to get a message from the queue the get fails with completion code = 2 reason code = 2043 MQRC_OBJECT_TYPE_ERROR. I have mimicked code from vb6 that works just fine but still cant get a message from the queue. I have looked at this error type in the MQseries programming reference and it is only listed for put calls. The only reason I can come up with for this error is that .net is mangling the message or get message options type when it passes it off the com object.
Ayone have any ideas why this is not working?

Here is the code iv been working with

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WindowsApplication1
{
/// <summary>
/// Summary description for Form1.
/// </summary>

public class Form1 : System.Windows.Forms.Form
{
private MQAX200.MQQueueManager MyMqManager;
private MQAX200.MQSession MyMqSession;
private MQAX200.MQQueue MyQueue;

REMOVED CODE TO SHORTEN FOR POST
}
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();

MyMqSession = new MQAX200.MQSessionClass();
//
// TODO: Add any constructor code after InitializeComponent call
//
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
REMOVED THIS CODE TO SHORTEN FOR POST
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
REMOVED THIS CODE TO SHORTEN FOR POST
}
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{

Application.Run(new Form1());
}

private void btnConnect_Click(object sender, System.EventArgs e)
{
int OpenOptions;
MyMqSession.ExceptionThreshold = 3;
MyMqManager = (MQAX200.MQQueueManager) MyMqSession.AccessQueueManager(tbQueueMngr.Text);

if(MyMqManager.IsConnected)
{
OpenOptions = (int) MQAX200.MQ.MQOO_INPUT_SHARED + (int) MQAX200.MQ.MQOO_OUTPUT;
MyQueue = (MQAX200.MQQueue) MyMqManager.AccessQueue(tbQueueName.Text, OpenOptions,"","","");
if(MyQueue.IsOpen)
{
sbConnection.Text = "Connected to " + MyMqManager.name + "." + MyQueue.name ;
btnPut.Enabled = true;
btnGet.Enabled = true;
}
}

}

private void btnPut_Click(object sender, System.EventArgs e)
{
MQAX200.MQMessage Message;
MQAX200.MQPutMessageOptions MessageOptions;

Message = (MQAX200.MQMessage) MyMqSession.AccessMessage();
Message.WriteString(tbMessage.Text);
MessageOptions = (MQAX200.MQPutMessageOptions) MyMqSession.AccessPutMessageOptions();

MyQueue.Put(Message, MessageOptions);

if(MyQueue.CompletionCode == 0)
{
tbMessage.Text = "";
}
else if(MyQueue.CompletionCode == 2)
{
sbConnection.Text = "Put Failed, Reason = " + MyQueue.ReasonName;
}

}

private void btnGet_Click(object sender, System.EventArgs e)
{
MQAX200.MQMessage NewMessage;
MQAX200.MQGetMessageOptions MessageOptions;

NewMessage = (MQAX200.MQMessage) MyMqSession.AccessMessage();
MessageOptions = (MQAX200.MQGetMessageOptions) MyMqSession.AccessGetMessageOptions();

if(MyQueue.IsOpen)
{
THIS NEXT CALL WILL FAIL WITH REASON CODE = 2043 REASON NAME = MQRC_OBJECT_TYPE_ERROR

MyQueue.Get(NewMessage,MessageOptions,30);

if(MyQueue.CompletionCode == 0)
{
tbMessage.Text = NewMessage.ReadString(30);
}
else if(MyQueue.CompletionCode == 2)
{
sbConnection.Text = "Get Failed, ReasonCode = " + MyQueue.ReasonCode + " Reason = " + MyQueue.ReasonName;
}
}

}
}
}

Any help or sample code would be greatly appreciated.

Thanks