NuSurvey.Web.Controllers.QuestionController.Create C# (CSharp) Method

        public ActionResult Create(int id, int? categoryId)
        {
            var survey = Repository.OfType<Survey>().GetNullableById(id);
            if (survey == null)
            {
                Message = "Survey Not Found";
                return this.RedirectToAction<ErrorController>(a => a.Index());
            }
            var viewModel = QuestionViewModel.Create(Repository, survey);
            if (categoryId != null)
            {
                var category = Repository.OfType<Category>().GetNullableById(categoryId.Value);
                viewModel.Category = category;
            }

            return View(viewModel);
        }