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.
Application Object
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.
The Application object's collections, methods, and events are
described below:
Collections
| Collection | Description |
|---|---|
| Contents | Contains all the items appended to the application through a script command |
| StaticObjects | Contains all the objects appended to the application with the HTML <object> tag |
Methods
| Method | Description |
|---|---|
| Contents.Remove | Deletes an item from the Contents collection |
| Contents.RemoveAll() | Deletes all items from the Contents collection |
| Lock | Prevents other users from modifying the variables in the Application object |
| Unlock | Enables other users to modify the variables in the Application object (after it has been locked using the Lock method) |
Events
| Event | Description |
|---|---|
| Application_OnEnd | Occurs when all user sessions are over, and the application ends |
| Application_OnStart | Occurs before the first new session is created (when the Application object is first referenced) |
