Activate/disactivate Dialog + AX 2012

You can use this method

public void dialogSelectCtrl()
{
;
if (dialogSelectCustGroup.value())
{
dialogCustGroup.allowEdit(true);
}
else
{
dialogCustGroup.allowEdit(false);
}
}

Confirm Message Box through X++ in AX 2012

Dialogbutton    dialogButtonConfirm;

;

dialogButtonConfirm  =   Box::yesNo("continue ", dialogButton::Yes, 

                                         "select one");

if (dialogButtonConfirm== dialogButton::Yes)

   {

        info( "Your fuctionality");

   }

else

     if (dialogButtonConfirm== dialogButton::No)

       {

          info( "stopped");

       }