The following C# code fragment demonstrates an application that uses a client connection to perform three actions:
// =========================================================================== // Licensed Materials - Property of IBM // 5639-C34 // (c) Copyright IBM Corp. 2003, 2005 // =========================================================================== using System; using IBM.WMQ; class MQSample { private String hostname = "your_hostname"; //define the name of your //host to connect to private String channel = "server_channel"; //define name of channel //for client to use //Note:assumes WebSphere MQ Server //is listening on the default //TCP/IP port of 1414 private String qManager = "your_Q_manager"; //define name of queue //manager object to //connect to. //When the class is called,this initialization is done first. public void init() { //Set up WebSphere MQ environment MQEnvironment.Hostname = hostname; //Could have put the //hostname and channel MQEnvironment.Channel = channel; //string directly here! }//end of init
public void start() { try { //Create a connection to the queue manager MQQueueManager qMgr =new MQQueueManager(qManager); //Set up the options on the queue we wish to open... int openOptions =MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT ; //Now specify the queue that we wish to open,and the open options... MQQueue system_default_local_queue = qMgr.AccessQueue("SYSTEM.DEFAULT.LOCAL.QUEUE", openOptions); //Define a simple WebSphere MQ message,and write some text in UTF format.. MQMessage hello_world =new MQMessage(); hello_world.WriteUTF("Hello World!"); //specify the message options... MQPutMessageOptions pmo =new MQPutMessageOptions(); //accept the defaults, //same as MQPMO_DEFAULT //put the message on the queue system_default_local_queue.Put(hello_world,pmo); //get the message back again... //First define a WebSphere MQ message buffer to receive the message into.. MQMessage retrievedMessage =new MQMessage(); retrievedMessage.MessageId =hello_world.MessageId; //Set the get message options.. MQGetMessageOptions gmo =new MQGetMessageOptions(); //accept the defaults //same as MQGMO_DEFAULT //get the message off the queue.. system_default_local_queue.Get(retrievedMessage,gmo); //And prove we have the message by displaying the UTF message text String msgText =retrievedMessage.ReadUTF(); Console.WriteLine("The message is:"+msgText); //Close the queue system_default_local_queue.Close(); //Disconnect from the queue manager qMgr.Disconnect(); } //If an error has occurred in the above,try to identify what went wrong. //Was it a WebSphere MQ error? catch (MQException ex) { Console.WriteLine("A WebSphere MQ error occurred :Completion code "+ ex.CompletionCode + "Reason code "+ex.ReasonCode); } catch (System.Exception ex) { Console.WriteLine("A System error occurred:"+ex); } }//end of start }//end of sample
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