用C#建立Windows服務的步驟:

1.建立Windows Service專案

2.向服務中函式功能實現

OnStart函式在啟動服務時執行，OnStop函式在停止服務時執行。在這裡，當啟動和停止服務時，向一個文字檔案中寫入一些文字資訊，

示例程式碼如下:

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;

namespace MyService

{

public partial class Service1 : ServiceBase

{

public Service1()

{

InitializeComponent();

}

protected override void OnStart(string[] args)

{

FileStream fs = new FileStream(@"d:\xx.txt", FileMode.OpenOrCreate, FileAccess.Write);

StreamWriter sw = new StreamWriter(fs);

sw.BaseStream.Seek(0, SeekOrigin.End);

sw.WriteLine("WindowsService: Service Started" + DateTime.Now.ToString() + "\n");

sw.Flush();

sw.Close();

fs.Close();

}

//protected override void OnContinue()

//{

// base.OnContinue();

//}

//protected override void OnPause()

//{

// base.OnPause(); // father class method inherit

//}

//protected override void OnShutdown()

//{

// base.OnShutdown();

//}

protected override void OnStop()

{

FileStream fs = new FileStream(@"d:\xx.txt", FileMode.OpenOrCreate, FileAccess.Write);

StreamWriter sw = new StreamWriter(fs);

sw.BaseStream.Seek(0, SeekOrigin.End);

sw.WriteLine("WindowsService: Service Stopped" + DateTime.Now.ToString() + "\n");

sw.Flush();

sw.Close();

fs.Close();

}

}

}