c# - C# 显示字幕

Question

我试图在正确的时间在屏幕上显示字幕
现在我得到了一个异常

代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;
class Program
{
    private static Queue<Subtitle> _subtitles;

    private static Subtitle _activeSubtitle;

    private static TimeSpan _currentTime = new TimeSpan();

    static void Main(string[] args)
    {
        _subtitles = new Queue<Subtitle>();

        Subtitle title1 = new Subtitle()
        {
            StartTime = TimeSpan.Parse("00:00:06,000"),
            EndTime = TimeSpan.Parse("00:00:07,400"),
            Text = "Enjoy the movie!"
        };

        Subtitle title2 = new Subtitle()
        {
            StartTime = TimeSpan.Parse("00:00:07,500"),
            EndTime = TimeSpan.Parse("00:00:09,500"),
            Text = "Hi, my name is Mary"
        };

        Subtitle title3 = new Subtitle()
        {
            StartTime = TimeSpan.Parse("00:00:22,000"),
            EndTime = TimeSpan.Parse("00:00:85,100"),
            Text = "Hello my name is John."
        };

        _subtitles.Enqueue(title1);
        _subtitles.Enqueue(title2);
        _subtitles.Enqueue(title3);

        Timer timer = new Timer(ShowSubtitles, null, 0, 100);

        while (_currentTime <= new TimeSpan(0, 0, 0, 30))
        {

        }
        Console.WriteLine("End");
    }

    private static void ShowSubtitles(object state)
    {

        if (_activeSubtitle == null && _subtitles.Count > 0)
            _activeSubtitle = _subtitles.Dequeue();
        Console.WriteLine(_currentTime);

        if (_activeSubtitle != null)
        {


            if (_currentTime >= _activeSubtitle.StartTime && _currentTime <= _activeSubtitle.EndTime)
                Console.WriteLine("\t{0}", _activeSubtitle.Text);

            if (_currentTime >= _activeSubtitle.EndTime)
                _activeSubtitle = null;
        }
        _currentTime = _currentTime.Add(new TimeSpan(0, 0, 0, 0, 100));

    }
}

internal class Subtitle
{
    public TimeSpan StartTime { get; set; }
    public TimeSpan EndTime { get; set; }
    public string Text { get; set; }
}

例外：
计时器 timer = new Timer(ShowSubtitles, null, 0, 100);
'System.Timers.Timer' 不包含带有 4 个参数的构造函数