UNHANDLED_EXCEPTION in App.g.i.cs page in windows phone app? -

whenever go 1 page page mainpage.xaml profile.xaml page unhandled_exception occured.its go global::system.diagnostics.debugger.break(); in app.g.i.cs page.please me how handle exception.thanks in advance.

my sample code is:

private async void profile_click(object sender, routedeventargs e)         {             try             {               await dispatcher.runasync(windows.ui.core.coredispatcherpriority.normal, () =>             {                 frame.navigate(typeof(profile), 0);             });              }             catch (exception)             {                  throw;             }            } 

try use

 await dispatcher.runasync(windows.ui.core.coredispatcherpriority.normal, ()=>  {        frame.navigate(typeof(secondpage));                         });