因此，我创建了一项在服务器上运行的服务，查看不同的文件夹共享，并将其放入数据库表中以进行自定义搜索，但是它提取了一个搜索位置的数据表并一次遍历它们，效果很好与小测试文件夹。现在，我尝试将其实际使用，但在计时器重新启动它之前，它无法通过第一个文件夹路径。我可以延长时间，但是我基本上希望它能够持续运行并在第一个完成后立即重新开始，或者不确定是否可以同时运行所有路径。我让它每30分钟运行一次，但肯定不够长。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Timers;


namespace MFTSearchService
{
    public partial class MFTSearchService : ServiceBase
    {
        Timer timer = new Timer(); // name space(using System.Timers;)
        public MFTSearchService()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            WriteToFile("Service is started at " + DateTime.Now);
            timer.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            timer.Interval = TimeSpan.FromMinutes(10).TotalMilliseconds; //number in milisecinds  
            timer.Enabled = true;
            //global::MFTSearchService.Search.SearchStart();


        }

        protected override void OnStop()
        {
            WriteToFile("Service is stopped at " + DateTime.Now);
        }

        private void OnElapsedTime(object source,ElapsedEventArgs e)
        {
            WriteToFile("Service is recall at " + DateTime.Now);
            timer.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            timer.Interval = TimeSpan.FromMinutes(30).TotalMilliseconds; //number in milisecinds  
            timer.Enabled = true;
            global::MFTSearchService.Search.SearchStart();

        }
        public void WriteToFile(string Message)
        {
            string path = AppDomain.CurrentDomain.BaseDirectory + "\\Logs";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            string filepath = AppDomain.CurrentDomain.BaseDirectory + "\\Logs\\ServiceLog_" + DateTime.Now.Date.ToShortDateString().Replace('/','_') + ".txt";
            if (!File.Exists(filepath))
            {
                // Create a file to write to.   
                using (StreamWriter sw = File.CreateText(filepath))
                {
                    sw.WriteLine(Message);
                }
            }
            else
            {
                using (StreamWriter sw = File.AppendText(filepath))
                {
                    sw.WriteLine(Message);
                }
            }
        }
    }
}