Expire page, and display nicely

[Rob Meade]

Hi all,

Can anyone post some code that will expire a page immediately and prevent
caching, so if my users submits data on a form, a thank you page appears, if
they then go foward a page and then click back they are displayed with an
'expired' message rather than my form being posted again etc?

Also - is it possible to detect the 'expired page' with asp.net so that I
could load my own display rather than the browsers default page for expired
pages? Or would I have to use the servers custom error pages for this etc?

Any help and information is appreciated,

Regards

Rob