Re: Updating a control with data on server event.

Hi again,
I've read the articles, and they are indeed very helpful, but I still have a
few gaps that I don't know how to fill. I will describe the situation in more
detail: my control may be one of several controls on a page. The user can use
this control to poll for some data. I was planning to use a timer object. I
want the control fields to be updated with data when data is available. I
don't want the user to see a "wait..." page, I want the user to continue
using the same page.
So I have the asynchroneous opeartion running, and I can have a data store
that would tell me whether data is already available for my session, but I
still don't have an idea how to poll that data store.
Please help...
Almog.

"Steven Cheng[MSFT]" wrote:

Hi Almog,

As for the "updating control ..." question you mentioned, I think it is a
typical asynchronous server-side processing and update client case, as John
has suggested, generally, you can let the server-side keep processing the
task(in a background thread) and the page will return the client
synchronously. After that, in client page, you can use script to constantly
post to the server and query the processing status, if finished, post back
the page and display final result.

Here are some former thread in newsgroup and tech articles in MSDN library
that discussing on similar topic:

http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/brow
se_thread/thread/44302efa18ea9567/1619ca7b4000d2f8

#Reporting Task Progress With ASP.NET 2.0
http://msdn.microsoft.com/msdnmag/issues/06/09/CuttingEdge/default.aspx

#How To: Submit and Poll for Long-Running Tasks
http://msdn2.microsoft.com/en-us/library/ms979200.aspx

Hope this helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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