Timer精确到毫秒的计时器 出错了 怎么改

Question

问题遇到的现象和发生背景

问题相关代码，请勿粘贴截图

运行结果及报错内容

我的解答思路和尝试过的方法

我想要达到的结果

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Timer
{
    public partial class Form1 : Form
    {
        long count = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
        }

        private void buttonStart_Click(object sender, EventArgs e)
        {
            timer1.Start();
        }

        private void buttonStop_Click(object sender, EventArgs e)
        {
            timer1.Stop();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            count++;
            long hour = count / 3600000;
            long min = (count - hour * 3600000)/60000;
            long s = (count - hour * 3600000 - min * 60000)/1000;
            long ms = (count - hour * 3600000 - min * 60000-s*1000)/1;
            label1.Text = String.Format("{0:00}:{1:00}:{2:00}:{3:00}", hour, min, s, ms);
        }
    }

Answer 1

具体报什么错呢？count数据太小了吧。