public ActionResult Fibonacci(FibonacciTool ft)
 {
     if (ModelState.IsValid)
     {
         var generator = new FibonacciGenerator();
         var fibonacciList = generator.FindFibs(ft.NumberOfFibs.Value);
         ft.FibonacciList = fibonacciList;
         return View("Fibonacci", ft);
     }
     ft.FibonacciList = new List<ulong>();
     return View("Fibonacci", ft);
 }
 public ActionResult Fibonacci()
 {
     var model = new FibonacciTool();
     return View(model);
 }