Windows 8 share on facebook and get response -


i'm trying impletent share mechanism in windows phone 8.1 app. want able share app content , react in application meaning,

  1. click share
  2. pick medium
  3. if picked == facebook , shared -> something
  4. if picked == somethingelse , shared -> etc..

so far managed make 

protected override void onnavigatedto(navigationeventargs e)     {         this._navigationhelper.onnavigatedto(e);         datatransfermanager.getforcurrentview().datarequested += ondatarequested;         datatransfermanager.getforcurrentview().targetapplicationchosen += senderontargetapplicationchosen;     }    private async void ondatarequested(datatransfermanager sender, datarequestedeventargs args)         {             _facebookpicked = false;             var request = args.request;             var sharedescription = resourceloader.getforcurrentview().getstring("sharedescription");             var deferral = args.request.getdeferral();              request.data.properties.title = "some title";             request.data.properties.description = "sometext";              deferral.complete();     }    private void senderontargetapplicationchosen(datatransfermanager sender, targetapplicationchoseneventargs args)         {             if (args.applicationname == "facebook")             {                 _facebookpicked = true;             }          }

what cannot figure out how determined if 1 pressed share button upon picking target app. there event can intercept?


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