System.Timers.Timer的使用

//3，定义底部时间显示Timer
public System.Timers.Timer tDayTime = null;
public delegate void ShowTime();//定义委托        //显示时间
tDayTime = new System.Timers.Timer(1000);//实例化Timer类，设置间隔时间为1000毫秒；
tDayTime.Elapsed += new System.Timers.ElapsedEventHandler(tDayTime_Elapsed);//到达时间的时候执行事件；
tDayTime.AutoReset = true;//设置是执行一次（false）还是一直执行(true)；
tDayTime.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件；

/// <summary>
/// 显示时间
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
public void tDayTime_Elapsed(object source, System.Timers.ElapsedEventArgs e)
{
try
{
FomatDatetime();
}
catch (Exception ex)
{
#region 异常处理
//将异常信息写入数据库
MNG_LOG_INFOCS.LogGeneral("显示时间:", ex.ToString(), VideoWatch_Log_ReportType_En.App_WinFormStart);
//将异常信息写入日志()
ExceptionErrorLog("显示时间:" + ex.ToString());
#endregion
}
}

/// <summary>
/// 显示时间
/// </summary>
public void FomatDatetime()
{
if (this.InvokeRequired)
{
this.BeginInvoke(new ShowTime(FomatDatetime));
}
else
{
System.TimeSpan diff = DateTime.Now.Subtract(startTime);
string runTime = "系统已经运行了：" + diff.Days + "天" + diff.Hours + "小时" + diff.Minutes + "分钟" + diff.Seconds + "秒";
this.toolStripStatuslblDayTime.Text = runTime;
this.statuslblDayTime.Text = "系统时间：" + DateTime.Now.ToString("yyyy年MM月dd日 HH:mm:ss");
}
}