orueba este codigo:
Código PHP:
<?php
$cadena_form="<form name='form1' method='POST' action='prueba.php'><input name='dni' type='hidden' value=";
$cadena_form2="<input type='submit' name='Enviar' value='Enviar'></form>";
while($row = mysql_fetch_array($result)) {
$aux=$row['DNI'];
//echo $aux;
$cadena_form_final=$cadena_form.$aux." ".$cadena_form2;
printf("<tr><td> %s</td> <td> %s </td><td> %s</td><td> %s</td><td> %s</td><td> %s</td><td> %s</td><td> %s</td><td> %s</td></tr>", $row['DNI'], $row['Nombre'], $row['Apellido'],$row['Apellido2'],$row['Email'],$row['Telefono'],$row['FechaNacimiento'],$row['Direccion'],$cadena_form_final);
}
?>