Can you please tell me that what -1500 is doing ? and how it is different from timeout property of session state in web.config.

I googled this and realised that response.expire will be used on every page and timeout will be just used once in the web.config.

Sorry , if my question is newbie as this is my first project.

Btw, thank you for your reponse.

Regards,

Behroz