Form post with button click

Hi
How can I simply create the form with post method and action to another third party using pure asp.net web form button click
<form action="http://paypal.com/payment.aspx" method="post">         first name: <input type="text" id="first_name" name="first_name" value="Irfan" />         <br />         last_name: <input type="text" id="last_name" name="last_name" value="Ali" />         <br />         email: <input type="email" id="email" name="email" value="Irfan.Ali@stjohn.org.nz" />     ...