C#做的系统服务如何调用应用程序运行？

C#做的系统服务如何调用explorer运行？//代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading;
using System.IO;namespace Windows_Server
{
    public partial class Mylock : ServiceBase
    {
        string sname = "explorer";        public Mylock()
        {
            InitializeComponent();
        }        protected override void OnStart(string[] args)
        {
            stat();
        }        protected override void OnStop()
        {        }
        public void stat()
        {
            Process[] proces = Process.GetProcessesByName(sname);
            foreach (Process proce in proces)
            {
                if (proce.ProcessName == sname)
                {                }
                else
                {
                    Thread trd = new Thread(qdcx);
                    trd.Start();
                }
            }
        }
        public void qdcx()
        {
            Process.Start("explorer");
        }        private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            stat();
        }    }
}
//结果  并不能打开~~5555~