private async Task NavigateBackAsync()
{
if (_currentFolder != null)
{
OneDriveStorageFolder currentFolder = null;
progressRing.IsActive = true;
try
{
if (!string.IsNullOrEmpty(_currentFolder.Path))
{
currentFolder = await _rootFolder.GetFolderAsync(_currentFolder.Path);
}
else
{
currentFolder = _rootFolder;
}
LstFolder.ItemsSource = await currentFolder.GetFoldersAsync(100);
_currentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
progressRing.IsActive = false;
}
}
}
public static async Task <OneDriveStorageFolder> OpenFolderPicker(string title, OneDriveStorageFolder rootFolder)
{
FoldersPickerControl folderPicker = new FoldersPickerControl(await rootFolder.GetFoldersAsync(100), rootFolder);
ContentDialog dialog = new ContentDialog();
dialog.Content = folderPicker;
dialog.Title = title;
dialog.PrimaryButtonText = "Ok";
if (await dialog.ShowAsync() == ContentDialogResult.Primary)
{
return(folderPicker.SelectedFolder);
}
else
{
return(null);
}
}