Vijay Windows Service

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

namespace TestWindowsService
{
public partial class Service1 : ServiceBase
{
int scheduleTime = Convert.ToInt32(ConfigurationSettings.AppSettings["ThreadTime"]);
Thread worker = null;
ProcessLog processLog = null;
public Service1()
{
InitializeComponent();
}

    protected override void OnStart(string[] args)
    {
        processLog = new ProcessLog();
        string strMessgae = "Service Start";
        try
        {
            processLog.ProcessLogFile(strMessgae);
            ThreadStart start = new ThreadStart(Working);
            worker = new Thread(start);
            worker.Start();
        }
        catch (Exception ex)
        {
            ErrorLog errorLog = new ErrorLog();
            errorLog.ErrorlogFile(ex.Message);
        }
    }

    public void Working()
    {
        try
        {
            while (true)
            {
                string path = "D:\\Logs\\ServiceTesting.txt";
                using (StreamWriter writer = new StreamWriter(path, true))
                {
                    //Divide By Zero Exception
                    int c = 0;
                    c = 100 / c;

                    writer.WriteLine(string.Format("Window Service is called on" + DateTime.Now.ToString("dd/mm/yyyy hh:mm:ss tt") + ""));
                    writer.Close();
                }
                Thread.Sleep(scheduleTime * 60 * 1000);
            }
        }
        catch (Exception ex)
        {
            ErrorLog errorLog = new ErrorLog();
            errorLog.ErrorlogFile(ex.Message);
        }
    }

    protected override void OnStop()
    {
        processLog = new ProcessLog();
        string strMessage = "Service Stop";
        try
        {
            processLog.ProcessLogFile(strMessage);
            if (worker != null & worker.IsAlive)
            {
                worker.Abort();
            }
		      }
			catch (Exception ex)
			{
				ErrorLog errorLog = new ErrorLog();
				errorLog.ErrorlogFile(ex.Message);
			}
	  }
}

}