insert csv file into sql table using windows service

Question

I have a method A1 in the class service2021.cs which is not being either called or executed. Can anyone tell me why?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.IO;
using System.Timers;
namespace InsertCsvIntoDatabaseTable
{
public partial class Service2021 : ServiceBase
{
Timer timer = new Timer();
public Service2021()
{
InitializeComponent();
//A1();
}
protected override void OnStart(string[] args)
{
WriteToFile("Service is started at " + DateTime.Now);
timer.Elapsed += new ElapsedEventHandler(OnElapsedTime);
WriteToFile("After ElapsedEventHandler in OnStart " + DateTime.Now);
timer.Interval = 30000;
WriteToFile("After timer Interval in OnStart " + DateTime.Now);
timer.Enabled = true;
WriteToFile("After timer Enabled in OnStart " + DateTime.Now);
}
protected override void OnStop()
{
WriteToFile("Service is stopped at " + DateTime.Now);
}
private void OnElapsedTime(object source, ElapsedEventArgs e)
{
//WriteToFile("Service is recall at before A1 method" + DateTime.Now);
A1();
WriteToFile("Service is recall at after A1 method" + DateTime.Now);
}
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);
}
}
}
public void A1()
{
Class2 ob = new Class2();
//ob.InsertExcelRecords(CSVFilePath);
ob.InsertExcelRecords();
}
}
}