I have an event called SubmitResponse().
SubmitResponse()
A user is presented with a list of questions and possible responses. After completing the responses, the user
Redirect on client side using javascript/jQuery
onclick="window.print();window.location.href='results.aspx';"
For your case
insub.Attributes.Add("OnClick", "print_form();window.location.href='results.aspx';")