C# 在localStorage-windows 8应用程序中保存inkManager的笔划

我尝试了很多东西，但我并不完全理解本地存储中的save。我知道它的工作原理，但我不知道如何使用inkManager。如果你有什么想法

这是我保存用户所需位置的代码，但我希望在localstorage中“自动保存”：

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)
            {
            }
        }
    }

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最后，解决方案非常简单：

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

---

最后，解决方案非常简单：

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