private EmployeeController(EmployeeRepository employeeRepository, EmployeeMapper employeeMapper)
 {
     this.employeeRepository = employeeRepository;
     this.employeeMapper = employeeMapper;
 }
        /// <summary>
        /// Main entry point of the Controller.
        /// Called once (from App.xaml.cs) this will initialise the application
        /// </summary>

        public void Start()
        {
            context_db = new FinalProjectDatabase();
            empRep = new EmployeeRepository(context_db);
            ShowViewEmployeeSelection();
        }