Setting cookie duration

[jojo11]

I have a customized module, where I write some information into both cookie and session state. When the session expires, in Session_End( ) in global.asax.cs, I write the value of the session state to database.

I want the cookie to expire at the same time as the session expires. But the problem is, the cookie still exists after the session expired.

In my web.config, I set the session expiration to 1 minute:
<sessionState mode="InProc" cookieless="false" timeout="1" />

In the module, when the cookie is created, I didn't specify the expiration time:
response.Cookies[COOKIE_NAME].Value = cookieVal;

So to my understanding, the cookie should expire when the session expires. But it didn't work as my expectation.

Can anyone explain the problem to me?

Thanks!

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Ummm, we have a bit of a problem here....