@{
	ViewData["Title"] = "Create";
}
<div class="text-center">
	<h2 class="display-4">Создание заказа</h2>
</div>
<form method="post">
	<div class="row">
		<div class="col-4">Блюдо:</div>
		<div class="col-8">
			<select id="dish" name="dish" class="form-control" asp-items="@(new SelectList(@ViewBag.Dishes,"Id", "DishName"))"></select>
		</div>
	</div>
	<div class="row">
		<div class="col-4">Количество:</div>
		<div class="col-8"><input type="text" name="count" id="count" /></div>
	</div>
	<div class="row">
		<div class="col-4">Сумма:</div>
		<div class="col-8"><input type="text" id="sum" name="sum" readonly /></div>
	</div>
	<div class="row">
		<div class="col-8"></div>
		<div class="col-4"><input type="submit" value="Создать" class="btn btn-primary" /></div>
	</div>
</form>

@section Scripts
{
	<script>
		$('#dish').on('change', function () {
			check();
		});
		$('#count').on('change', function () {
			check();
		});

		function check() {
			var count = $('#count').val();
			var dish = $('#dish').val();
			if (count && dish) {
				$.ajax({
					method: "POST",
					url: "/Home/Calc",
					data: { count: count, dish: dish  },
					success: function (result) {
						$("#sum").val(result);
					}
				});
			};
		}
	</script>
}