WindowsService

创建WindowsService

选择Windows Service项目模板

设置服务名称等属性

双击Service1.cs，在属性窗口设置服务名称

添加安装程序

双击Service1.cs，右击空白背景区域，选择“添加安装程序”菜单，添加ProjectInstaller组件类。然后选择serviceInstaller1，查看属性，验证ServiceName属性是否为Service1。可以添加Description属性、DisplayName属性。DisplayName可以用于启动服务的 net start 命令的名称。选择serviceProcessInstaller1，把Account属性改为LocalSystem，提升服务程序的权限。

添加服务启动关闭程序

启动和关闭服务会在系统事件中添加事件。

public partial class Service1 : ServiceBase
{
    private EventLog eventLog1;
    private int eventId = 1;
    private string filePath = @"D:\MyServiceLog.txt";

    public Service1()
    {
        InitializeComponent();
        eventLog1 = new EventLog();
        if (!EventLog.SourceExists("TestMichaelSource"))
        {
            EventLog.CreateEventSource(
                "TestMichael", "TestMichaelNewLog");
        }
        eventLog1.Source = "TestMichaelSource";
        eventLog1.Log = "TestMichaelNewLog";
    }

    protected override void OnStart(string[] args)
    {
        eventLog1.WriteEntry("In OnStart.");

        Timer timer = new Timer();
        timer.Interval = 60000; // 60 seconds
        timer.Elapsed += new ElapsedEventHandler(this.OnTimer);
        timer.Start();

        using (FileStream stream = new FileStream(filePath, FileMode.Append))
        using (StreamWriter writer = new StreamWriter(stream))
        {
            writer.WriteLine($"{DateTime.Now},服务启动！");
        }
    }

    public void OnTimer(object sender, ElapsedEventArgs args)
    {
        // TODO: Insert monitoring activities here.
        eventLog1.WriteEntry("Monitoring the System", EventLogEntryType.Information, eventId++);
    }

    protected override void OnStop()
    {
        eventLog1.WriteEntry("In OnStop.");

        using (FileStream stream = new FileStream(filePath, FileMode.Append))
        using (StreamWriter writer = new StreamWriter(stream))
        {
            writer.WriteLine($"{DateTime.Now},服务停止！");
        }
    }
}

新建Windows Forms程序，用于安装、启动、停止、卸载服务

！添加Windows Service项目引用，把上面创建的服务程序引用到WinForm程序中
！添加System.ServiceProcess和System.Configuration.Install引用
using System.Collections;
using System.Configuration.Install;
using System.ServiceProcess;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        string serviceFilePath = $"{Application.StartupPath}\\WindowsService4.exe";
        string serviceName = "Service1";

        public Form1()
        {
            InitializeComponent();
        }

        private void button_Install_Click(object sender, EventArgs e)
        {
            if (this.IsServiceExisted(serviceName)) this.UninstallService(serviceName);
            this.InstallService(serviceFilePath);
        }

        private void button_Start_Click(object sender, EventArgs e)
        {
            if (this.IsServiceExisted(serviceName)) this.ServiceStart(serviceName);
        }

        private void button_Stop_Click(object sender, EventArgs e)
        {
            if (this.IsServiceExisted(serviceName)) this.ServiceStop(serviceName);
        }

        private void button_UnInstall_Click(object sender, EventArgs e)
        {
            if (this.IsServiceExisted(serviceName))
            {
                this.ServiceStop(serviceName);
                this.UninstallService(serviceFilePath);
            }
        }
        //判断服务是否存在
        private bool IsServiceExisted(string serviceName)
        {
            ServiceController[] services = ServiceController.GetServices();
            foreach (ServiceController sc in services)
            {
                if (sc.ServiceName.ToLower() == serviceName.ToLower())
                {
                    return true;
                }
            }
            return false;
        }

        //安装服务
        private void InstallService(string serviceFilePath)
        {
            using (AssemblyInstaller installer = new AssemblyInstaller())
            {
                installer.UseNewContext = true;
                installer.Path = serviceFilePath;
                IDictionary savedState = new Hashtable();
                installer.Install(savedState);
                installer.Commit(savedState);
            }
        }

        //卸载服务
        private void UninstallService(string serviceFilePath)
        {
            using (AssemblyInstaller installer = new AssemblyInstaller())
            {
                installer.UseNewContext = true;
                installer.Path = serviceFilePath;
                installer.Uninstall(null);
            }
        }
        //启动服务
        private void ServiceStart(string serviceName)
        {
            using (ServiceController control = new ServiceController(serviceName))
            {
                if (control.Status == ServiceControllerStatus.Stopped)
                {
                    control.Start();
                }
            }
        }

        //停止服务
        private void ServiceStop(string serviceName)
        {
            using (ServiceController control = new ServiceController(serviceName))
            {
                if (control.Status == ServiceControllerStatus.Running)
                {
                    control.Stop();
                }
            }
        }

    }
}

app.manifest

!提升应用程序权限
<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />