Redirect instantaneously & continue processing page

[CK]

I have a web page called PageOne.aspx which is supposed to do a long
process but I don't need to show any results to the client, so I want
to redirect the client to PageTwo.aspx right in the beginning of the
Page_Load and then continue with the long process.

So I've tried using Response.Redirect("http://mysite.com/PageTwo.aspx",
false) but the customer is not getting the response only until I finish
processing the whole page.

So I've tried adding Response.Flush();Response.Close(); but it does not
work properly. The first time I go to PageOne I get redirected right a
way but it will cause IE to display "page can not be displayed" instead
of redirecting to PageTwo.aspx, and then if I try again to go to
PageOne in that same browser it will take a long time until it gets to
the "page not found". [caching?]

But if try testing that same page with Wget, perl get they seem to
follow to PageTwo.aspx without incidence.

In short how do you redirect a customer instantaneously to another page
while the first page can still continue doing stuff after the customer
gets the redirect message?

 

[Kevin Spencer]

Try using Threading.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
Neither a follower nor a lender be.

 

[CK]

Thanks,
1) I knew that threading is an option but will I still be able to use
the Session to set values so other pages can read the result?

2) what is the official way to redirect and continue processing the
page?

 

[Steve C. Orr [MVP, MCSD]]

If your needs are very simple you could probably get away with using
threading as Kevin described.
If you're going to be doing this kind of thing a lot, though, you might
consider triggering a Windows Service to do the work. They are much more
robust for handling background tasks.

Here's more information on Windows Services:
http://msdn.microsoft.com/library/d...nvssamp/html/vbcs_CreatingaWindowsService.asp

 

[Kevin Spencer]

Hi CK,

1) I knew that threading is an option but will I still be able to use
the Session to set values so other pages can read the result?

Yes. However, that isn't going to be your greatest issue. Be sure to read up
on Threading before you try to use it, and remember that a Page class's
lifetime is very brief.

2) what is the official way to redirect and continue processing the
page?

There is none. A redirect is a header that is added to the Response. It
tells the browser to retrieve the URL it indicates. It can't be sent until
the Response is sent.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
Neither a follower nor a lender be.

 

[CK]

Thanks,

1. The link to windows service you posted is not found can you tell if
you meant this page?
http://msdn.microsoft.com/library/d...kthroughcreatingwindowsserviceapplication.asp

2. can you please describe what you mean by saying "triggering a
Windows Service"? is it possible to communicate with a service?

 

[Steve C. Orr [MVP, MCSD]]

Sorry, here is the updated link:
http://msdn.microsoft.com/library/d...kthroughcreatingwindowsserviceapplication.asp

There are many ways you could trigger a windows service. You can call a
method on it directly with the appropriate permissions, or you could save
information to a file or database which the windows service checks
periodically, etc.