public ActionResult TipRequestForm(TipCalculation request)
        {
            if (ModelState.IsValid)
            {
                var calc = new TipCalculations();

                //convert tipcalculation to tipcalculationrequest

                var tipdata = new TipCalculatorRequest();

                tipdata.DollarValue = request.DollarValue.Value;
                tipdata.TipPercentage = request.TipPercentage.Value;

                var result = calc.Calculate(tipdata);
                return View("TipCalculationResult", result);
            }
            else
            {
                return View(request);
            }
        }
 public ActionResult TipRequestForm()
 {
     var model = new TipCalculation();
     return View(model);
 }