I created a simple event registration form using ASP.NET with VB.NET that stores records in a SQL table. I have 3 pages: default(where they select the evnt type), registration (where they enter all the registration info) and status (this is to display the confirmation message).
After the user clicks on the SUBMIT button he/she is redirected to the confirmation page and appropriate message is displayed.
Recently I noticed that some of the users are using a back button from the browser to go back to the registration page so they can register another person.
How can I prevent this from happening ? I want them to go back to the default page in order to register another person..

Any help would be appreciated,
Daniel