private DataService GetDataService()
 {
     DataService _dataService = (DataService)HttpContext.Current.Items["DataService"];
     if (_dataService == null)
     {
         _dataService = new DataService();
         HttpContext.Current.Items["DataService"] = _dataService;
     }
     return _dataService;
 }
 public AuthorizationManager(DataService MotorlamDataService)
 {
     this.DataService = MotorlamDataService;
 }