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