formula_manage/ViewModel/ExchangeViewModel.cs

using System;
using System.Windows.Threading;

namespace formula_manage.ViewModel
{
    public class ExchangeViewModel : ViewModelBase
    {
        public ExchangeViewModel()
        {
            CountDown();
        }

        public void CountDown()
        {
            DispatcherTimer timer = new DispatcherTimer//初始化循环，每0.5秒调用一次Tick_Event
            {
                Interval = TimeSpan.FromSeconds(0.5)
            };
            timer.Tick += Tick_Event;
            timer.Start();

            //设置定时器
            // disTimer.Tick += new EventHandler(DisTimer_Tick);//每一秒执行的方法
            // disTimer.Interval = new TimeSpan(10000000); //时间间隔为一秒。
            // disTimer.Start();//计时开始
        }
        void Tick_Event(object sender, EventArgs e)//Tick_Event周期执行事件
        {

        }
    }

}