Using a Server Timer Component in ASP.NET

[Guest]

I need a method to be called every 10 Seconds in an ASP.NET web application, and I was wondering the best way of doing it. I created a static Method on a Page and passed it to a Server Timer that is also created as a static instance variable of the same page. The Timer is activated on Application Start. It is working fine until now, except that in the called method, I can't get a reference to the Cache object, since it is only available during a request processing via the Context. So to pass application level data to the method, I created another static variable on the same page

All this looks messy to me, although it is working. I would like to know the right way of doing it.

 

[Ken Cox [Microsoft MVP]]

You might want to see how Darren Neimke does it in his code:

http://www.gotdotnet.com/Community/...mpleGuid=69a7c7bb-939a-4777-aceb-2d9ebbe35b85

 

[Kevin Spencer]

Just put your timer in an object in the Application Cache, and store it
without any expiration. The object doesn't have to render any interface; in
a sense, you are installing a "Service" in the Application Cache. The object
has an event handler for the timer's "Elapsed" event, and the event handler
does the work.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

Thanks, but this approach uses a client side timer. I need a server side

timer which should work even if any page is loaded in a client browser.

A method must be called every 10 seconds as long the application is in

memory. And a reference to the application Cache is also required to
manipulate application level data.

 

[Guest]

Thats a better idea. Thanks. But how should I get a reference to the Cache in that object? Should it be added to it as a private variable

Because when the Timer event fires, HttpContext is null, as it is not processing a request. I can't seem to get a reference to the Cache on the fly

Is the only way would be adding a reference of the Cache to the object?

 

[Kevin Spencer]

Thats a better idea. Thanks. But how should I get a reference to the Cache
in that object? Should it be added to it as a private variable?

Because when the Timer event fires, HttpContext is null, as it is not

processing a request. I can't seem to get a reference to the Cache on the
fly.

Is the only way would be adding a reference of the Cache to the object?

Not that I know of. What does it need to reference the Cache for? Is this
something which could be stored in a database perhaps?

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

Thats a better idea. Thanks. But how should I get a reference to the Cache

in that object? Should it be added to it as a private variable?

Because when the Timer event fires, HttpContext is null, as it is not

processing a request. I can't seem to get a reference to the Cache on the
fly.