When validate trigger block level

Question

Hi,
I Have a form application. On the entrance page If a user forget to enter his name or Password the form prompt the message to aware him about what is missing.
SO I wrote the folloing code on when validate trigger block level, but it did not work according to my needs, should I replace this trigger with other?
Sharbat
BEGIN
     if:Block1.User is null then
     message('Please enter the user name);
     raise form_trigger_failure;
     if:Block1.password is null then
     message('Please enter the password'););
          raise form_trigger_failure;
          end if;
end if;
end;

Answer 1

use
if:Block1.User is null then
message('Please enter the user name);
raise form_trigger_failure;
end if;
on key-next-item of user textbox
and
if:Block1.password is null then
message('Please enter the password'););
raise form_trigger_failure;
end if;
on the key-next-item of the password text box