/// <summary> /// Open folder /// </summary> /// <param name="storage"></param> /// <param name="fileSystem"></param> /// <param name="folder"></param> /// <returns></returns> private async Task <IFolder> OpenRootFolderAsync(IFileStorage storage, string fileSystem, string folder) { var fs = await storage.CreateOrOpenDriveAsync(fileSystem); return(await fs.CreateOrOpenSubFolderAsync(folder)); }