C#计时器

1.计时类StartTimer.cs

class StartTimer
{
public uint second;
public uint minute;
public uint hour;
public Label labelTimer = new Label();
public Timer countTimer = new Timer();//定义一个计时器
//计时函数
public StartTimer()
{
labelTimer.Size = new Size(120, 20);
this.labelTimer.Text = "00:00:00";
this.labelTimer.TextAlign = System.Drawing.ContentAlignment.TopCenter;

countTimer.Interval = 1000;//计时定时器初始化
countTimer.Tick += new EventHandler(countTimer_Tick);
}
private string strTimer()
{
string timer = null;
string timerSecond = null;
string timerMinute = null;
string timerHour = null;
if (second < 59)
{
second++;
}
else
{
second = 0;
if (minute < 59)
{
minute++;
}
else
{
minute = 0;
if (hour < 23)
{
hour++;
}
else
{
hour = 0;
}
}
}
if (second < 10)
{
timerSecond = "0" + second.ToString();
}
else
{
timerSecond = second.ToString();
}
if (minute < 10)
{
timerMinute = "0" + minute.ToString();
}
else
{
timerMinute = minute.ToString();
}
if (hour < 10)
{
timerHour = "0" + hour.ToString();
}
else
{
timerHour = hour.ToString();
}
timer = timerHour + ":" + timerMinute + ":" + timerSecond;
return timer;
}
//重置计时
public void resetTimer()
{
second = 0;
minute = 0;
hour = 0;
labelTimer.Text = "00:00:00";
}
//采集计时
private void countTimer_Tick(object sender, EventArgs e)
{
labelTimer.Text = strTimer();
}
}

2.调用

StartTimer timer=new StartTimer();//新建一个实例

this.Controls.Add(startTimer.labelTimer);//将时间label添加到当前的Form中
startTimer.labelTimer.Location = new Point(120,220);//指定时间label的位置
startTimer.countTimer.Enabled = true;//开始计时