如何在c#中等待一定时间的按键？

using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        Console.WriteLine("按下任意键开始计时...");
        Console.ReadKey();

        Console.WriteLine("开始计时，请在5秒内按下任意键...");
        Task userInputTask = GetUserInputAsync();

        await Task.WhenAny(userInputTask, Task.Delay(5000));

        if (userInputTask.IsCompleted)
        {
            Console.WriteLine("您按下了键盘上的按键！");
        }
        else
        {
            Console.WriteLine("超过了等待时间，没有检测到按键！");
        }
    }

    static async Task GetUserInputAsync()
    {
        await Task.Run(() => Console.ReadKey());
    }
}