PRB: ASP Does Not Support Events (243546)
The information in this article applies to:
- Microsoft Active Server Pages
This article was previously published under Q243546 SYMPTOMS Active Server Pages (ASP) does not support events.
CAUSE ASP does not have support to handle events. ASP as an
automation client is late-bound and does not have access to the type
information required to determine if the object has implemented the IConnectiontPoint interface neccessary for events. RESOLUTION Call a COM object from ASP that in turn calls the component
that raises the event. The following logic represents the implementation:
- ASP page calls component 1.
- Component 1 calls component 2, which performs some work and
then raises an event.
- Component 1 loops until a flag is set. The flag is
triggered by component 2 raising the event.
- Component 2 raises an event to notify component 1 that it
has completed.
- Component 1 returns to ASP.
In general, because ASP should process requests as fast as
possible and return immediately to the client, you should not call components
that are waiting on event notifications from other components. If you need to
call components that wait for event notification, consider using Microsoft
Message Queue (MSMQ) so that you can immediately return control to your ASP
page.
| Modification Type: | Minor | Last Reviewed: | 4/22/2003 |
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| Keywords: | kbEventService kbprb KB243546 |
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