C#

private void comboBox1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
}

private void comboBox1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
	if((e.Index%2)==0)
	{
		e.Graphics.DrawString(this.comboBox1.Items[e.Index].ToString(),e.Font,Brushes.Black,e.Bounds,StringFormat.GenericDefault);
	}
	else
	{
		Font boldFont = new Font(e.Font,FontStyle.Bold);
		e.Graphics.DrawString(this.comboBox1.Items[e.Index].ToString(),boldFont,Brushes.Black,e.Bounds,StringFormat.GenericDefault);
	}
}

public bool browseMessages(out ArrayList messages, string queue)
    {
      // browse (i.e. get without removing) a message on the message queue
      messages = new ArrayList();
      MQQueueManager mqQM = null;
      MQQueue mqQ = null;

      try
      {
        if (queue == null || queue.Length == 0)
          throw new Exception("Queue name required");

        // connect to queue manager
        connectManager(out mqQM);

        // open queue with required access
        connectQueue(mqQM, queue, MQC.MQOO_FAIL_IF_QUIESCING + MQC.MQOO_BROWSE, out mqQ);

        // get message options
        MQGetMessageOptions mqGMO = new MQGetMessageOptions();
        mqGMO.Options = MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_NO_WAIT + MQC.MQGMO_BROWSE_NEXT; // browse with no wait
        mqGMO.MatchOptions = MQC.MQMO_NONE; // no matching required

        MQMessage mqMsg = new MQMessage(); // object to receive the message

        // browse all messages on the queue
        while (true)
        {
          // browse message - exception will be thrown when no more messages
          mqQ.Get(mqMsg, mqGMO);

          // get message text from the message object
          messages.Add(mqMsg.ReadString(mqMsg.MessageLength));
        }
      }
      catch (MQException mqex)
      {
        if (mqex.ReasonCode == MQC.MQRC_NO_MSG_AVAILABLE)
        {
          // harmless exception MQ throws to indicate that there are no messages on the queue
          return true;
        }
        else
          throwMQException(mqex);
      }
      finally
      {
        if (mqQ != null)
          mqQ.Close();

        if (mqQM != null)
          mqQM.Disconnect();
      }

      return false;
    }