Thanks Igor. It worked for me. Nwei, for reference here is my code snippet:
final RadioGroup rgrp = new RadioGroup("rGrp", new Model()){
                        @Override
                        protected boolean wantOnSelectionChangedNotifications() 
{
                                // TODO Auto-generated method stub
                                return true;
                        }
                };
...........
rgrp.add(wc);
form.add(rgrp);

final IndicatingAjaxButton rmvDeno = new IndicatingAjaxButton("rmvDen",
form){
                        @Override
                        protected void onSubmit(AjaxRequestTarget target, Form 
form) {
                                final Den den = (Den) rgrp.getModelObject();
                                        getService().delete(den);
                                target.addComponent(wc);
                        }
                };
rmvDeno.setDefaultFormProcessing(false);
form.add(rmvDeno);

Even if its in form it bypasses the validation and only get the selected
radio buttons values. I think this also applicable to checkgroup? :)


igor.vaynberg wrote:
> 
> add(new RadioGroup(...) { protected
> wantOnSelectionChangedNotifications() { return true; }}
> 
> will make it invoke RadioGroup.onSelectionChanged anytime a selection
> changes
> 
> -igor
> 
> 
> On Thu, Mar 27, 2008 at 10:48 PM, freak182 <[EMAIL PROTECTED]> wrote:
>>
>>  Nice idea, but i dont know how to implement it. Validator or Behavior?
>> any
>>  codes..thanks a lot..cheers
>>
>>
>>
>>
>>  Martin Makundi wrote:
>>  >
>>  > Ofcourse this does not work if javascript is disabled.
>>  >
>>  > I wonder if it is possible to switch the required fields in a
>>  > validator (one which can be configured to run before the required
>>  > checks).
>>  >
>>  > **
>>  > Martin
>>  >
>>  > 2008/3/28, Martin Makundi <[EMAIL PROTECTED]>:
>>  >> You could use onchange events to attach ajax behavior that changes
>> the
>>  >>  required fields?
>>  >>
>>  >>  **
>>  >>  Martin
>>  >>
>>  >>  2008/3/28, freak182 <[EMAIL PROTECTED]>:
>>  >>
>>  >> >
>>  >>  >  Hello,
>>  >>  >  I have a problem about bypassing some textfields during form
>>  >> process.I know
>>  >>  >  how bypass form processing through adding a method to
>>  >>  >  button.setDefaultFormProcessing(false);. Now my problem is to
>> bypass
>>  >> only 1
>>  >>  >  or 3 requiredtextfields during form processing because what im
>>  >> concerned is
>>  >>  >  only the value of radiogroup attach to the form...e.g.. i have to
>>  >> REMOVE
>>  >>  >  only the radio button which is selected in the form, thats means
>> no
>>  >> more
>>  >>  >  inputs needed.Of course, when i have to add items in listview i
>>  >> should
>>  >>  >  validate if there is value in textfield which required...Thanks a
>>  >>  >  lot..Cheers.
>>  >>  >
>>  >>  > --
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>>  >>
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>>  >>  >
>>  >>  >
>>  >>  > 
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