asp.net mvc项目中修改业务无关的代码为异步执行

将业务无关的逻辑，修改为异步执行，示例代码：

public ActionResult SubmitOrder(Order order)
{
    // Save the order to the database synchronously

    // Send email asynchronously using Task
    Task.Run(() => SendEmailAsync(order.RecipientEmail, "Order Confirmation", "Your order has been successfully submitted."));

    // Notify outbound party asynchronously using Task
    Task.Run(() => NotifyOutboundPartyAsync("[email protected]", "A new order has been placed."));

    // Return appropriate response to the client
    return View("OrderConfirmation");
}