private void button关机_Click(object sender, EventArgs e)
 {
     CacheUtil.AppendCache("UPDATE [Table] SET 关机时间 = GETDATE(), 时长 = GETDATE() - 开机时间 WHERE 序号 in (SELECT MAX(序号) FROM[Table]) "
                           .Replace("GETDATE()", "'" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'"), false);
     Application.Exit();
 }
 private void button开机_Click(object sender, EventArgs e)
 {
     CacheUtil.AppendCache("INSERT INTO [Table](开机时间) VALUES (GETDATE())"
                           .Replace("GETDATE()", "'" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'"), false);
     Application.Exit();
 }