Detailed introduction to session in ASP

Session object is used to store user information. Variables stored in the session object hold information about a single user and are available to all pages in an application.

Session Object

When you work with an application, you open it, make changes, and then close it. It's a lot like a conversation. The computer knows who you are. It knows when you open and close apps. But there's a problem on the Internet: Since HTTP addresses cannot persist state, the web server doesn't know who you are or what you do.

ASP solves this problem by creating a unique cookie for each user. The cookie is transferred to the client and contains information that identifies the user. This interface is called a Session object.

Session objects are used to store information about the user, or to change settings for a user's session. Variables stored in the session object hold information about a single user and are available to all pages in the application. The information stored in the session object is usually name, id, and parameters. The server creates a new Session for each new user and revokes the Session object when the session expires.

When does the Session start?

Session starts at:

*When a new user requests an ASP file, and the Global.asa file references the Session_OnStart subroutine;

*When a value is stored in a Session variable;

*When a user requests an ASP file, and Global.asa uses the