You will have to make use of JavaScript
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
function Redirect() {
var t1 = document.getElementById("txt1").value;
var t2 = document.getElementById("txt2").value;
window.location = 'MyPage.aspx?t1=' + t1 + "&t2=" + t2;
}
</script>
</head>
<body>
<input type="text" id="txt1" />
<input type="text" id="txt2" />
<input type="button" id="btn" onclick="Redirect()" value="Send" />
</body>
</html>