尝试使用Winforms对"Timer“列中的每一行应用”数字时钟“

using System;
using System.Windows.Forms;

namespace DigitalClockApp
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            // 在DataGridView中添加"Timer"列
            dataGridView1.Columns.Add("Timer", "Timer");

            // 启动计时器
            timer1.Start();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            // 更新"Timer"列中的时间
            foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                row.Cells["Timer"].Value = DateTime.Now.ToString("HH:mm:ss");
            }
        }
    }
}