how to print whole content of form including datagridview content in c# windows application

<script type="text/javascript">
    function printPartOfPage(elementId) {
        var printContent = document.getElementById(elementId);
//this is the id of the div in which the complete content is placed
        var windowUrl = 'Test';
        var uniqueName = new Date();
        var windowName = 'Print' + uniqueName.getTime();
        var printWindow = window.open(windowUrl, windowName, 'left=50,top=50,width=600,height=400');
        printWindow.document.write(printContent.innerHTML);
        printWindow.document.close();
        printWindow.focus();
        printWindow.print();
        printWindow.close();
    }</script>