Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;

namespace FileMonitoringService
{
    internal static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        static void Main(string[] args)
        {
           if(Environment.UserInteractive)
           {
              FileMonitoringService service = new FileMonitoringService();
                service.StartInConsole();
           }
           else
           {
                ServiceBase[] ServicesToRun;
                ServicesToRun = new ServiceBase[]
                {
                new FileMonitoringService()
                };
                ServiceBase.Run(ServicesToRun);
           }
            
           
        }
    }
}