Page 234 - DCAP408_WEB_PROGRAMMING

Web Programming

Notes But what if the user doesn’t have cookies enabled? Session variables can still be used, but there
will be no way for the user to store the SessionID as he jumps from page to page. Hence, the
session variables will not be saved for the user who has cookies disabled. However, session
variables that are created and referenced on the same page will work fine. For example, the
following script will output “Hello, World” regardless of whether or not the user has cookies
enabled:
<%
Session(“Message”) = “Hello, World!”
Response.Write Session(“Message”)
%>

Notes Of course, if, on another page, the value of Session(“Message”) is referenced, only
those users who have cookies enabled will have a value of “Hello, World!” there.

Self Assessment

Fill in the blanks:
8. The Session object is used to store information about, or change settings for a
……………………
9. The server creates a new Session object for each new user, and destroys the ……………………
when the session expires.

10. Kind of Session variables are bits of information that can be stored on a ……………………
basis.

9.4 ASP Application Object

A group of ASP files that work together to perform some purpose is called an application. The
Application object in ASP is used to tie these files together.
An application on the Web may be a group of ASP files. The ASP files work together to perform
some purpose. The Application object in ASP is used to tie these files together.
The Application object is used to store and access variables from any page, just like the Session
object. The difference is that ALL users share one Application object, while with Sessions there
is one Session object for EACH user.
The Application object should hold information that will be used by many pages in the application
(like database connection information). This means that you can access the information from
any page. It also means that you can change the information in one place and the changes will
automatically be reflected on all pages.

Notes You can store values in the Application Collections. Information stored in the
Application collections is available throughout the application and has application scope.

Store and Retrieve Application Variables

Application variables can be accessed and changed by any page in the application.

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