首先实例出DispatcherTimer
DispatcherTimer Timer = new DispatcherTimer();
//设置时间,秒数,精确到最接近的毫秒,0.5就是500ms
Timer.Interval = TimeSpan.FromSeconds(0.5);
//设置触发时间
Timer.Tick += Timer_Tick;
触发事件
private void Timer_Tick(object sender, EventArgs e)
{
}