如何观察事件更改的Filesystem观察器对象过滤器（watcher.NotifyFilter）

Question

无论如何，我可以观看用于事件更改的Filesystem观察器对象过滤器（watcher.NotifyFilter）

IF (watcher.NotifyFilter ==true ) 
( call this method )
else
()

我想让IF / Else块24小时运行或将其作为服务安排

DateTime lastModified = System.IO.File.GetLastAccessTime("C:\\testfile.csv");

string Today_var = DateTime.Now.ToString("dd/MM/yyyy");

using (StreamWriter sw = new StreamWriter("C:\\Cscript_Activitylog.txt"))
{
    sw.Write( DateTime.Now.ToLocalTime()+"\n\n");
    sw.Write("----------------------- Activity Feed begins - Test file change ---------------------------");
    sw.Write(lastModified.ToString("dd/MM/yyyy HH:mm"+"\n"));
    sw.Write(DateTime.Now.ToString("dd/MM/yyyy HH:mm"+"\n"));

    Console.Write( DateTime.Now.ToLocalTime()+"\n\n");
    Console.Write("----------------------- Activity Feed begins - Test file change ---------------------------");
    Console.Write(lastModified.ToString("dd/MM/yyyy HH:mm"+"\n"));
    Console.Write(DateTime.Now.ToString("dd/MM/yyyy HH:mm"+"\n"));

    //if file was modified today manual script to check every 30 min
    // I intend to run this as  service to check this but I have not managed yet to run this 
    code on console yet to convert to a service script
    if(Today_var==lastModified.ToString("dd/MM/yyyy"))
    {

        Console.WriteLine("------- -------------------##----There is a file update today ----");
     // set the time (In min in this case)
    System.Timers.Timer t = new System.Timers.Timer(TimeSpan.FromMinutes(30).TotalMilliseconds);
    t.Elapsed += new System.Timers.ElapsedEventHandler(your_method);
    t.AutoReset = true;
    t.Enabled = true;
    }
    //Struggling with this part
    // How to do I check if filesystem watcher triggered any changes in the directory then 
    else if(fsw.Equals(true))
    {
        Process.Start("C:\\Do_this_file_Sync.bat"); 
        Console.WriteLine("File system watcher notifier event found");
        Thread.Sleep(3000);
    }
    else
    {
    Console.WriteLine("SLeeping 30000 - No file update today !");
    }
                Console.WriteLine("Finished Today {0}",DateTime.Now.ToLocalTime());
    sw.Close();             
}

我将非常感谢能够为控制台应用程序完成此代码的任何帮助。