<script type="text/javascript">
        function prGV()
        {
            var newWin = window.open('printer','','');
            var titleHTML = document.getElementById("divGV1").innerHTML;
            newWin.document.write(titleHTML);
            newWin.document.location.reload();
            newWin.print();
            newWin.close();
        }
    </script>把你的gridView放在名为divGV1的div里。用个html button,执行上面那个js。