pannel上放一个checkbox指示是否采用系统时间，并且定义一个计时器和一个dateTimepicker，问题是
dateTimepicker的值只有秒在跳动，分钟从来不变，求解。。。。。
- C# code
private void checkBox9_CheckedChanged(object sender, EventArgs e) { CheckBox checkBox = sender as CheckBox; if (checkBox.Checked) { this.dateTimePicker25.Enabled = false; this.timer1.Start(); } else { this.dateTimePicker25.Enabled = true; this.timer1.Stop(); } } private void timer1_Tick(object sender, EventArgs e) { this.dateTimePicker25.Value = DateTime.Now; }