public override void LoadData()
 {
     NavigationHelper.IsBusy = true;
     BackgroundProcessFactory.RunAsync(null, (o, e) =>
     {
         e.Result = DBDataSource.GetCurrentTest();
     },
                                       (o, e) =>
     {
         NavigationHelper.IsBusy = false;
         if (e.Error != null)
         {
             return;
         }
         else
         {
             var test = e.Result as TestInstance;
             if (test != null)
             {
                 NavigationHelper.CurrrentTest = test;
             }
         }
     });
 }