How do I stop the Back and Refresh buttons from resubmitting my form?

Question

I am doing web development.

I have a page to do with credit card, which when user click \"refresh\" or \"Back\", the transaction will be performed one more time, wh

Answer 1

Place this code on the form page

Response.Cache.SetCacheability(HttpCacheability.NoCache);

Response.Cache.SetExpires(DateTime.Now-new TimeSpan(1,0,0));

Response.Cache.SetLastModified(DateTime.Now);

Response.Cache.SetAllowResponseInBrowserHistory(false);