public async Task <IActionResult> List(string sectionName) { var section = Classroom.Sections .SingleOrDefault(s => s.Name == sectionName); if (section == null) { return(NotFound()); } var submissionResults = await SubmissionService.GetSectionSubmissionsAsync ( ClassroomName, ProjectName, CheckpointName, sectionName ); return(View(submissionResults)); }