Submit problem in iframe_html/css_WEB-ITnose

The homepage index.htm uses an iframe to reference b.htm. There is a form in this sub-page. The action of the form is submitted to order.asp, but the data processing and display results of order.asp are both in the iframe. How can I make this happen? How about running and displaying order.asp in the parent page?

Reply to discussion (solution)

Set the target attribute of the form

Set the target attribute of the form

How to do it specifically?