public ActionResult Edit(Guid?id)
 {
     try
     {
         var pianoCharge = Db.PianoCharges.FirstOrDefault(x => x.Id == id);
         var model       = new NewPianoChargesVm()
         {
             Id      = pianoCharge.Id,
             Code    = pianoCharge.Code,
             Details = pianoCharge.Details,
             Amount  = pianoCharge.Amount
         };
         return(PartialView("~/Views/PianoCharges/Add.cshtml", model));
     }
     catch (Exception ex)
     {
         return(Json(new JsonResponse()
         {
             IsSucess = false, ErrorMessage = ex.Message
         }, JsonRequestBehavior.AllowGet));
     }
 }
        public ActionResult Save(NewPianoChargesVm vm)
        {
            try
            {
                if (vm.Id == null)
                {
                    PianoCharges pianoCharge = new PianoCharges()
                    {
                        Id        = Guid.NewGuid(),
                        Code      = vm.Code,
                        Details   = vm.Details,
                        Amount    = vm.Amount,
                        CreatedAt = DateTime.Now,
                        CreatedBy = LoggedInUser?.UserName
                    };
                    Db.PianoCharges.Add(pianoCharge);
                }
                else
                {
                    var pianoCharge = Db.PianoCharges.FirstOrDefault(x => x.Id == vm.Id);
                    pianoCharge.Code    = vm.Code;
                    pianoCharge.Details = vm.Details;
                    pianoCharge.Amount  = vm.Amount;
                }
                Db.SaveChanges();

                return(Json(new JsonResponse()
                {
                    IsSucess = true
                }, JsonRequestBehavior.AllowGet));
            }
            catch (Exception ex)
            {
                return(Json(new JsonResponse()
                {
                    IsSucess = false, ErrorMessage = ex.Message
                }, JsonRequestBehavior.AllowGet));
            }
        }