How do I return a user back to the page they came from after filling out a contact form?

Question

I have a website in VB/asp.net 4 and a client may be on a page that says "contact an engineer" and it brings you to a contact form. After filling out the form, it says:

Your message has been sent. Thank you for contacting USS Vision. A member of the engineering team at USS Vision will respond to you at the earliest convenience.

I want to add a hyperlink saying "Return to the page you came from" and have them click it and go back to that page. Is this possible, and if so, how would I go about doing it? Thanks for any help anybody can offer!

Answer 1

Maybe document.referrer or window.history can help you.

UPDATE:

Based on comments to this answer I'm also suggesting to retrieve HttpRequest.UrlReferrer when user comes and save it in Session, then use it anywhere you need.

Answer 2

Unless there's some compelling reason to have them leave the page they're on, it'd probably be easiest -- and a better user experience -- to handle that by opening the contact form in a modal window; the user fills out the form, submits it, receives an acknowledgment, and closes the modal, no muss no fuss.