محاسبه BMI بدن

@ViewBag.BMI

    @using(Html.BeginForm("BMI", "Home", FormMethod.Post)) {     Weight :     Height :      }

[HttpGet] public ActionResult BMI() {     return View(); }     [HttpPost] public ActionResult BMI(int weight , int height) {     if (!string.IsNullOrEmpty(weight) && !string.IsNullOrEmpty(height))     {         ViewBag.BMI = Math.Pow(2,(weight / height));     }           return View(); }