如何在不同的函数中使用dispatcherTimer.Stop？

using System;
using System.Windows.Threading;

namespace DispatcherTimerExample
{
    class Program
    {
        static void Main(string[] args)
        {
            DispatcherTimer dispatcherTimer = new DispatcherTimer();
            dispatcherTimer.Interval = TimeSpan.FromSeconds(1);
            dispatcherTimer.Tick += new EventHandler(DispatcherTimer_Tick);

            StartTimer(dispatcherTimer);
            StopTimer(dispatcherTimer);
        }

        private static void StartTimer(DispatcherTimer dispatcherTimer)
        {
            dispatcherTimer.Start();
        }

        private static void StopTimer(DispatcherTimer dispatcherTimer)
        {
            dispatcherTimer.Stop();
        }

        private static void DispatcherTimer_Tick(object sender, EventArgs e)
        {
            Console.WriteLine("Tick");
        }
    }
}