COM & .NET Component Services

Disabling Applications and Components

The COM+ 1.5 Explorer lets you disable applications and components. When you disable an application, all client attempts to create any component from that application fail, and the following message is associated with the HRESULT: “The component has been disabled.” To disable an application, display its pop-up context menu and select Disable. A disabled application has a red square on it (like a player’s Stop button) in the COM+ 1.5 Explorer (see Figure B-5). To enable a disabled application, bring up the context menu again and select Enable. You can only disable a COM+ 1.5 application. Legacy applications cannot be disabled. Interestingly, a client that already has a reference to a COM+ object is not affected by the disabled application. Only clients that try to create new objects are affected. Consequently, you can have a disabled application running indefinitely.

Figure B-5. Disabling or enabling a COM+ 1.5 application from its pop-up context menu

You can also disable on a component-by-component basis instead of disabling an entire application. Every component pop-up context menu has a Disable option. Like a disabled application, a disabled component has a red square on it. All client attempts to create a disabled component fail, and the following message is associated with the HRESULT: “The component has been disabled.” You can disable ...