I think you have a misunderstanding of how the web works... The web works
in a request-response fashion, only clients can make requests for data.
Hence, the server (ASP.NET) can force a refresh.

There are a couple solution to emulate what you want:

1. Refresh continously
2. Poll the server via javascript remoting, when the server returns a
positive response, refresh thte apge

Option 1 is easy. Option 2 takes some knowledge of javascript.

Ok got it then you can use Cache object where you can specify when the
object changes referesh the cache.

Cache object can further be customized on lot of parameter like values
, time , change in file etc etc.

Shivprasad Koirala
C# , VB.NET , SQL SERVER , ASP.NET Interview Questions
http://www.geocities.com/dotnetinterviews/

Hi, Nathan.

You might want to take a look at:
"Generating Client-Side Script for Postback"

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cp
congeneratingclient-sidejavascriptforpostback.asp

That article explains how to generate a postback event
in controls other than buttons and image buttons.

Make sure you follow through to the accompanying article:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cp
conpostbackusingjavascriptsample.asp

That sample creates a custom link button
that initiates postback through client-side script.

For a sample which derives from WebControl,
see "Rendering a Server Control Samples" :

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cp
conrenderingservercontrolssamples.asp

I see what might be a problem in using these methods, and it's that
synchronizing the client-side script so that it executes *after* your
new image has been created might be tricky.

You might want to consider adding a "Please wait..."  message
or a progress bar to your code and introducing a time delay
for the postback to occur, so that enough time elapses before
the page is refreshed by the postback.

For "Please wait..." and progress bar example code, see :

http://www.daveandal.net/books/6744/loadpost/simplewait.aspx
http://www.daveandal.net/books/6744/loadpost/progressbar.aspx

There's links to source code in both.

Juan T. Llibre
ASP.NET MVP
http://asp.net.do/foros/
Foros de ASP.NET en Español
Ven, y hablemos de ASP.NET...
======================

Quick and dirty:

Use SendKeys to send an {f5} to the IE window - bingo
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlr
fSystemWindowsFormsSendKeysClassTopic.asp

Good luck