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
{
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);
}
#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
}
#endregion
}
}
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。
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