For the current user
System.Environment.GetFolderPath(Environment.SpecialFolder.Programs ));
For all users
System.Environment.GetFolderPath(Environment.SpecialFolder.CommonPrograms ));
For the current user
System.Environment.GetFolderPath(Environment.SpecialFolder.Programs ));
For all users
System.Environment.GetFolderPath(Environment.SpecialFolder.CommonPrograms ));