App.xaml.cs: Null Exception was unhandled - IdleDetectionMode.Disabled in WindowsPhone?

Question

any one help how to use code wise example for Grid using in phone application....

Answer 1

Some times in App.xaml.cs file ,we may get an exception like "Null Exception was unhandled" at line
PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;

So solutions are

Solution1:

Clearing the \bin and \obj folders and then recompile ,it will resolve your issue.

Solution2:

By adding PhoneApplicationService = new PhoneApplicationService() on the line above code.