c#之添加window服务(定时任务)
本文讲述使用window服务创建定时任务
1.如图,新建项目,windows桌面->windows服务
2.如图,右键,添加安装程序
3.在下图安装程序 serviceInstaller1 上右键,修改serviceName和Description
4.如图,在 serviceProcessInstaller 上右键,修改 Account 为 LocalSystem
5.在Service1中 添加代码
public partial class Service1 : ServiceBase { //记录到event log中,地址是 C:\Windows\System32\winevt\Logs (双击查看即可,文件名为MyNewLog) private static EventLog eventLog1; private int eventId = 1; public Service1() { InitializeComponent(); eventLog1 = new System.Diagnostics.EventLog(); if (!System.Diagnostics.EventLog.SourceExists("MySource")) { System.Diagnostics.EventLog.CreateEventSource( "MySource", "MyNewLog"); } eventLog1.Source = "MySource"; eventLog1.Log = "MyNewLog"; } /// <summary> /// 启动服务 /// </summary> /// <param name="args"></param> protected override void OnStart(string[] args) { eventLog1.WriteEntry("In OnStart."); log("In OnStart."); // Set up a timer that triggers every minute. 设置定时器 Timer timer = new Timer(); timer.Interval = 60000; // 60 seconds 60秒执行一次 timer.Elapsed += new ElapsedEventHandler(this.OnTimer); timer.Start(); } /// <summary> /// 停止服务 /// </summary> protected override void OnStop() { eventLog1.WriteEntry("In OnStop."); log("In OnStop."); } /// <summary> /// 继续服务 /// </summary> protected override void OnContinue() { eventLog1.WriteEntry("In OnContinue."); log("In OnContinue."); } /// <summary> /// 定时器中定时执行的任务 /// </summary> /// <param name="sender"></param> /// <param name="args"></param> public void OnTimer(object sender, ElapsedEventArgs args) { // TODO: Insert monitoring activities here. eventLog1.WriteEntry("Monitoring the System", EventLogEntryType.Information, eventId++); log("the timer"); } /// <summary> /// 记录到指定路径:D:\log.txt /// </summary> /// <param name="message"></param> private static void log(string message) { using (FileStream stream = new FileStream("D:\\log.txt", FileMode.Append)) using(StreamWriter writer=new StreamWriter(stream)) { writer.WriteLine($"{DateTime.Now}:{message}"); } } }
结构如图:
6.右键生成解决方案
7.打开项目,复制bin目录到C盘下新建的 windowServiceTest 文件夹的 windowService_Hello文件夹下,另外复制 C:\Windows\Microsoft.NET\Framework\v4.0.30319 下的 InstallUtil.exe 到 windowServiceTest 文件夹下;如图
8.安装服务
打开cmd (以管理员身份),并且进入windowServiceTest 文件夹下
安装服务:
InstallUtil.exe C:\windowServiceTest\windowService_Hello\bin\Debug\WindowService_HelloWorld.exe
效果图:
9.打开服务管理器,启动MyService服务,并且等待几分钟,然后卸载服务
卸载服务:
InstallUtil.exe -u C:\windowServiceTest\windowService_Hello\bin\Debug\WindowService_HelloWorld.exe
10.检验是否有效果
在D盘发现log.txt文件,打开如下
event log 所在如图
可见,window服务上的定时任务已生效
参考网址
https://docs.microsoft.com/en-us/dotnet/framework/windows-services/walkthrough-creating-a-windows-service-application-in-the-component-designer