Application Object

Application object of ASP is related to the manipulation of information about entire web application for all clients on the server.

Methods

Method	Description
Contents.Remove	Remove or delete an item from the Contents collection of Application object.
Contents.RemoveAll	Remove or delete all items from the Contents collection of Application object.
Lock	Lock the properties of Application object by only one client at a time for preventing other clients from modification.
Unlock	Unlock or release the properties of Application object by the only one client at a time for allowing other clients to modify

Properties

Property	Description
Contents (Collection)	Add or set the value of an item of the Contents collection of Application object through script commands.
StaticObjects (Collection)	Collection of all objects added to the session through the <OBJECT> tag within the Application scope.

Events

Event	Description
Application_OnEnd	Event occurs on the end of the Application after all the Session_OnEnd event. Available objects are Application Object and Server Object built-in objects.
Application_OnStart	Event occurs on the start of the Application before the first Session_OnStart event. Available objects are Application Object and Server Object built-in objects.

Remarks

All items in the collections of Application object is available within the scope of application.
An object instance of a component can be assigned to an item of a Contents Collection through the Server.CreateObject method with the Set keyword.
And an embedded object can also be assigned to an item of a StaticObjects Collection through the <OBJECT> tag
When store an object instance in an Application object, the threading model of objects should be considered because the threading model of objects have a significan impact on the performance and security context of the object.
But all built-in objects cannot be assigned to neither a Content Collection nor a StaticObjects Collection.
Besides, an array can also be assigned to an item of a Contents Collection in the form of a collection, but the elements of the stored array in the Contents Collection cannot be manipulated as an ordinary array directly because the array is stored as a collection.
The methods and properties of ASP application object can be grouped into
- Setup/Event: Application_OnEnd; Application_OnStart
- Variable Control: Lock; Unlock
- Object: StaticObjects
- Variable:
  - Add/Set: Contents;
  - Remove: Contents.Remove; Contents.RemoveAll

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ID: 120100025 Last Updated: 1/27/2012 Revision: 0 Ref:

References

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