在localStorage中保存InkManager笔画 - windows 8应用程序

Question

我尝试了很多东西，但我并不真正了解保存在localstorage中的所有内容。我知道自相机以来它的工作原理，但我不知道如何使用inkManager。如果你有任何想法？

这是我的代码保存在用户想要的，但我想“自动保存”中的localStorage：

private async void save_Button(object sender, RoutedEventArgs e) 
    { 
     if (_inkManager.GetStrokes().Count > 0) 
     { 
      try 
      { 
       Windows.Storage.Pickers.FileSavePicker save = new Windows.Storage.Pickers.FileSavePicker(); 
       save.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.Desktop; 
       save.DefaultFileExtension = ".jpg"; 
       save.FileTypeChoices.Add("JPG", new string[] { ".jpg" }); 
       StorageFile filesave = await save.PickSaveFileAsync(); 
       IOutputStream ab = await filesave.OpenAsync(FileAccessMode.ReadWrite); 

       if (ab != null) 
        await _inkManager.SaveAsync(ab); 

       // await save.CopyAsync(ApplicationData.Current.LocalFolder, "merge1.jpg"); 

       if (save != null) 
       { 
        Clipboard.Source = new Windows.UI.Xaml.Media.Imaging.BitmapImage(new Uri("ms-appdata:///local/merge1.jpg")); 
       } 

      } 
      catch (Exception) 
      { 
      } 
     } 
    } 

Answer 1

该解决方案是很容易的最后：

StorageFile myMerge = await ApplicationData.Current.LocalFolder.CreateFileAsync("myimg.png"); 
IOutputStream ac = await myMerge.OpenAsync(FileAccessMode.ReadWrite); 
if (ac != null) 
    await _inkManager.SaveAsync(ac);