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ASP Application Object

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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:


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


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)


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)

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