如何用C#创建Windows Service
在.Net中用C#创建Windows Service，其实很简单，按照以下的步骤就可以做出一个简单的Windows Service。
1．首先在创建工程的时候选择Windows Service，这样.Net会自动生成Windows Service的框架；
2．完成Windows Service的相应事件，主要是OnStart和OnStop这两个事件，完成后大致代码如下：
using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Diagnostics;using System.ServiceProcess;using System.IO;using System.Threading;namespace WinSDemo
{
public class WinSDemo : System.ServiceProcess.ServiceBase
{ /// <summary> /// Required designer variable.
/// </summary> private System.ComponentModel.Container components = null; private bool blnStopThread; private Thread thdMain; public WinSDemo() { // This call is required by the Windows.Forms Component Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call } // The main entry point for the process static void Main() { System.ServiceProcess.ServiceBase[] ServicesToRun; // More than one user Service may run within the same process. To add // another service to this process, change the following line to // create a second service object. For example, // ServicesToRun = new System.ServiceProcess.ServiceBase[] { new WinSDemo() }; System.ServiceProcess.ServiceBase.Run(ServicesToRun); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { // // WinSDemo // this.CanPauseAndContinue = true; this.ServiceName = "MyTest"; } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } /// <summary> /// Set things in motion so your service can do its work. /// </summary> protected override void OnStart(string[] args) { // TODO: Add code here to start your service. thdMain=new Thread(new ThreadStart(WriteLog)); thdMain.Start(); } /// <summary> /// Stop this service. /// </summary> protected override void OnStop() { // TODO: Add code here to perform any tear-down necessary to stop your service. blnStopThread=true; thdMain.Join(); } protected override void OnPause() { thdMain.Suspend(); } protected override void OnContinue() { thdMain.Resume(); } protected void WriteLog() { StreamWriter myWriter=null; do { Process.Start("net","send localhost yourValue"); try { myWriter=new StreamWriter("c:\\MyLog.txt",true); myWriter.WriteLine(DateTime.Now.ToString()); myWriter.Close(); } catch{}; Thread.Sleep(5000); }while(blnStopThread==false); } }
}注：为了使自己能更好的识别自己写的Windows Service，建议在InitializeComponent修改Service的名称。
3．为了使自己写的Service能加载到系统中去，光靠以上步骤是不够；接下来，向当前的工程添加Service Installer，在其中设置Service安装后的起始状态，代码如下：
using System;using System.Collections;using System.ComponentModel;using System.Configuration.Install;using System.ServiceProcess; namespace WinSDemo{ /// <summary> /// Summary description for WinSDemoIns. /// </summary> [RunInstaller(true)] public class WinSDemoIns : System.Configuration.Install.Installer { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; private ServiceInstaller serviceInstaller; private ServiceProcessInstaller processInstaller; public WinSDemoIns() { // This call is required by the Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call processInstaller = new ServiceProcessInstaller(); serviceInstaller = new ServiceInstaller(); // Service will run under system account processInstaller.Account = ServiceAccount.LocalSystem; // Service will have Start Type of Manual serviceInstaller.StartType = ServiceStartMode.Automatic; serviceInstaller.ServiceName = "MyTest"; Installers.Add(serviceInstaller); Installers.Add(processInstaller); } 
Component Designer generated code }}4．完成以上的步骤，代码的部分就完成了，编译成可执行文件，再用.Net的Service安装工具就行了，即在Dos窗口中，键入“installutil yourService.exe”，这样执行就可以了，相反，如果想卸载Service的话，加一个参数就可以了，即“installutil /u yourService.exe”。注意有可能.Net的路径在环境变量中不存在，可能直接执行是不能成功的，希望先找到“installutil.exe”存在的目录，大致在“\WINDOWS\Microsoft.NET\Framework\v1.1.4322”目录下。
至于以后Service的部署，由于.Net写的程序，运行环境必须要安装.Net Framework，所以在其他机器安装自己写的Service时候，一定要先安装.Net运行环境。
