setting n retreiving some msg selector, using which reteiving only a particular msg

[rahul batra]

Hello friends,
My application Requirement.
I have to send messages using QueueSender and all of those messages must be uniqely indentifiable on the queue since while responding to those messages i have to see to what message am i replying .
so i am haiving two problems

1) what to use and how to set a messages with some unique identifier before sending it using QueueSender on the queue.

2) while retreiving , i have to check the message for identifying it and then appropriately replying. so that means i will have to specify some message selector while creating my QueueReceiver using QueueSession. and then retreive only that message from queue which is equal to the value that i had set while sending the message

However i am not able to write the code for it though i went through the API's.

please do help if any one of you have done it earlier.