use javascript:<script language="javascript">
function document.onkeydown()
{
var e = event.srcElement;
if (event.keyCode == 13 && (e.tagName != "INPUT" || (e.type !="button" && e.type != "submit" && e.type !="reset")))
{
document.all("YourButtonID").click();
}
}
</script>
function document.onkeydown()
{
var e = event.srcElement;
if (event.keyCode == 13 && (e.tagName != "INPUT" || (e.type !="button" && e.type != "submit" && e.type !="reset")))
{
document.all("YourButtonID").click();
}
}
</script>
function document.onkeydown()
{
var e = event.srcElement;
if (event.keyCode == 13)
{
__doPostBack('yourButtonID','')
//yourButtonID is a webform control
}
}
</script>