<html> <body> <form runat="server"> <table id="table1" border="1" runat="server"> <tr> <td>Cell 1</td> <td>Cell 2</td> </tr> <tr> <td>Cell 3</td> <td>Cell 4</td> </tr> </table> <input type="button" value="Change Contents" OnServerClick="submit" runat="server"/> </form> </body> </html>