public async Task <IActionResult> RenderPictureList(int?id) { if (!id.HasValue) { return(NotFound()); } var viewModel = await _pictureService.GetAllByFolderIdAsync(id.Value); var folder = await _folderService.GetByIdAsync(id.Value); var breadcrumbTitle = folder != null ? $@"لیست فایل های پوشه {folder.Name}" : "لیست فایل ها"; this.SetCurrentBreadCrumbTitle(breadcrumbTitle); return(View("PictureList", viewModel)); }