While working with Silverlight application,I can’t able to debug application through debugger using aspnetwp.exe attaché process. Attaching debugger to aspnetwp process will perfectly works with asp.net application. But It will not work with silverlight application. Solution is you need to attach browser process(If you are using internet explorer, iexplore.exe) and type should be "silverlight. 86".
Silverlight Tips · · · ·
Thanks kirti..This saved me some time.. :)