public ActionResult <IEnumerable <StudentTestDto> > GetTestsAssignedToStudent() { var res = new List <StudentTestDto>(); //AutoMapper with LINQ ProjectTo: var sytnhesisTests = _synthesisRepository.GetAssigned(UserId); if (sytnhesisTests != null && sytnhesisTests.Any()) { res.AddRange(sytnhesisTests.Select(sts => new StudentTestDto(sts))); } var analysisTests = _analysisRepository.GetAssigned(UserId); if (analysisTests != null && analysisTests.Any()) { res.AddRange(analysisTests.Select(ats => new StudentTestDto(ats))); } return(res); }