实现效果:
知识运用:
Timer组件的interval属性 //获取或设置Timer组件Tick事件发生的时间间隔
public int Interval {get;set}
NumericUpDown控件的Value属性 //获取或设置数字显示框的值
public decimal Value {get;set;}
实现代码:
private void button1_Click(object sender, EventArgs e)
{
DateTime get_time1 = DateTime.Now;
DateTime sta_ontime1=Convert.ToDateTime(label4.Text.Trim().ToString());
get_df = DateAndTime.DateDiff("s",get_time1,sta_ontime1,FirstDayOfWeek.Sunday,FirstWeekOfYear.FirstFourDays);
if (get_df > 0)
{
if (timer2.Enabled != true)
{
timer2.Enabled = true;
label6.Text = "闹钟已启动";
label7.Text = "剩余" + get_df.ToString() + "秒";
}
else
{ MessageBox.Show("闹钟已启动 请取消后再试"); }
}
else
{
long hour = 24 * 3600 + get_df;
timer2.Enabled = true;
label6.Text = "闹钟已启动";
label7.Text = "剩余" + hour.ToString() + "秒";
}
}