The browser does not know when the application times out, so you can only
handle as an error, if one occurs. You can set it so the page automatically
goes to a logoff page after so many minutes, but you should also make sure
they cannot use the back button if you do that. That is done with
JavaScript.

Hi Laurahn,

Which time-out are you referring to? Do you mean that a page failed to
finish executing (which has a default 90 seconds for 1.x and 110 seconds
for 2.0 and can be controlled by <httpRuntime> in web.config or
HttpServerUtility.ScriptTimeout property). Or do you mean the timeout of
the session.

For the request timeout, you can define a custom error page for error code
500:

   <customErrors mode="On">
     <error statusCode="500" redirect="ErrorPage500.aspx" />
   </customErrors>

For the session timeout, please see following if following article useful:

#Build an ASP.NET Session Timeout Redirect Control
http://www.eggheadcafe.com/articles/20051228.asp

Regards,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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