System.UnauthorizedAccessException while calling await App.DataModel.SaveRitualDataAsync();

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  I was trying to enhance the Daily Ritual App of Bob Tabor where i want to multiple select and delete the ritual(s) using List View.

  but it is throwing the exception when i try to delete ritual(s) and save to the Json File.

  System.UnauthorizedAccessException was unhandled by user code
    HResult=-2147024891
    Message=Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
    Source=mscorlib
    StackTrace:
         at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
         at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__10.MoveNext()
      --- End of stack trace from previous location where exception was thrown ---
         at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__10.MoveNext()
      --- End of stack trace from previous location where exception was thrown ---
         at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
         at DailyRitual.DataModel.DataSource.<saveRitualDataAsync>d__12.MoveNext()
      --- End of stack trace from previous location where exception was thrown ---
         at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
         at DailyRitual.DataModel.DataSource.<SaveRitualDataAsync>d__17.MoveNext()
      --- End of stack trace from previous location where exception was thrown ---
         at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
         at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
         at DailyRitual.MultipleSelectionDelete.<OnNavigatedTo>d__0.MoveNext()
    InnerException: 
  

  =====The Code====

                                                

  private void SelectRitual_Click(object sender, RoutedEventArgs e)
          {
              myListView.SelectionMode = ListViewSelectionMode.Multiple;
  
              myListView.SelectionChanged += myListView_SelectionChanged;
  
              CommandBar bottomCommandBar = this.BottomAppBar as CommandBar;
              if (bottomCommandBar != null)
              {
                  // Remove AppBarButton.
                  bottomCommandBar.PrimaryCommands.Clear();
                  AppBarButton deleteButton = new AppBarButton();
                  deleteButton.Icon = new SymbolIcon(Symbol.Delete);
                  deleteButton.Label = "Delete";
                  deleteButton.IsEnabled = false;
  
                  bottomCommandBar.PrimaryCommands.Insert(0, deleteButton);
  
              }
  
  
          }
  
          void myListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
          {
              CommandBar bottomCommandBar = this.BottomAppBar as CommandBar;
              AppBarButton deleteButton = (AppBarButton)bottomCommandBar.PrimaryCommands[0];
  
              if (myListView.SelectedItems.Count() != 0)
              {
                  deleteButton.IsEnabled = true;
                  deleteButton.Click += deleteButton_Click;
              }
              else
                  deleteButton.IsEnabled = false;
  
  
              //bottomCommandBar.PrimaryCommands.Clear();   
              //throw new NotImplementedException();
          }
  
          private async void deleteButton_Click(object sender, RoutedEventArgs e)
          {
  
              myListView.SelectionChanged -= myListView_SelectionChanged;
                  foreach (var item in myListView.SelectedItems)
                  {
                      int count = myListView.SelectedItems.Count();
                      if(count!=0)
                          App.DataModel.deleteSelectedRituals(((Ritual)(item)));
                  }
  
              if(myListView.SelectedItems.Count==0)
              { 
                  await App.DataModel.SaveRitualDataAsync();
                  Frame.Navigate(typeof(MultipleSelectionDelete));
              }
          }

  ========================

  private async Task saveRitualDataAsync()
          {
              var jsonSerializer = new DataContractJsonSerializer(typeof(ObservableCollection<Ritual>));
              using (var stream = await Windows.Storage.ApplicationData.Current.LocalFolder.OpenStreamForWriteAsync(fileNAME,
                  CreationCollisionOption.ReplaceExisting))
              {
                  jsonSerializer.WriteObject(stream, _rituals);
                  stream.Dispose();
              }
          }

  Plz Help.

  • Moved by Jack Zhai-MSFTMicrosoft contingent staff Monday, July 6, 2015 11:45 AM Not the VS Debugger issue

  Thursday, June 25, 2015 8:20 AM