public ActionResult TSection(TSectionViewModel viewModel)
        {
            var resultViewModel = this.performCalculations <TSectionViewModel>(viewModel);

            ViewBag.HasResult = true;
            return(View(resultViewModel));
        }
        public ActionResult TSection()
        {
            ViewBag.ShowResults = false;
            ViewBag.InputErrors = false;
            var viewModel = new TSectionViewModel
            {
                WebThickness    = "0.2",
                FlangeThickness = "0.2",
                FlangeWidth     = "1",
                Height          = "2"
            };

            ViewBag.HasResult = false;
            return(View(viewModel));
        }