Active Server Pages (ASP) implements classes that enable your component to access the properties and methods of the ASP built-in objects. The ObjectContext object exposes methods that return an interface to one of the ASP built-in objects. Your component can use these interfaces to access the methods and properties of the built-in objects.
The following table lists the built-in object classes:
| Class | Use to |
| Application Object | Calls the methods and properties of the Application Object. |
| ASPError Object | Calls the methods and properties of the ASPError Object. |
| ObjectContext Object | Returns the built-in objects and provide methods used in transaction processing. |
| Request Object | Calls the methods and properties of the Request Object. |
| Response Object | Calls the methods and properties of the Response Object. |
| ScriptingContext | Returns the built-in objects: Application Object, Request Object, Response Object, Server Object, or Session Object. This is an obsolete approach. You should use ObjectContext instead. |
| Server Object | Calls the methods and properties of the Server Object. |
| Session Object | Calls the methods and properties of the Session Object. |
To use the ObjectContext and built-in objects in a Visual Basic component, you must include a reference to the Microsoft® ASP Object Library in your Visual Basic project.