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Introduction
Response
Request
Application
Session
Server
Session Object
The Session Object is used to maintain state across web applications. What this means is
that regular html pages are requested by the browser and then sent. The connection between
the server and the browser is connected and disconnected each time a request is made. To
combat this ASP has the Session Object. This object allows you to set Session variables
that can be used from page to page within your application.
*Remember, there is one Application Object for all users, but each user
has their own Session Object that is unique to them.
An example use of the Session Object is to set a Session variable equal to whether or not
the current user is logged in. To do this we would first check the Session variable to
see if the requesting user is logged in. If they are logged in we would send them to a
specific page, if not then we would send them to the login page. At the login page, the user
would type in their name and password, the script would check it for accuracy and then if it
was correct set a Session variable stating that they have successfully logged in. The setting
of the Session variable is show in the example below:
Session("loggedin") = "yes"
In the above code we set the "loggedin" Session variable equal to yes. This way if the user
requests another page that requires them to be logged in, we simply check the Session variable
to see if it equals "yes".
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