public ActionResult _AddDiscount(List <DiscountModel> DiscountModel, int?txtDays, int?txtQty, decimal?txtDiscount) { if (DiscountModel == null) { DiscountModel = new List <DiscountModel>(); } DiscountModel.Add(new DiscountModel() { Days = txtDays, Curent = 0, Discount = txtDiscount, Qty = txtQty }); return(PartialView("_DiscountListInner", DiscountModel)); }