利用C#编写一个Windows服务程序的方法详解

public partial class MyService : ServiceBase
    {
        public MyService()
        {
            InitializeComponent();
        }
        string filePath = @"D:\MyServiceLog.txt";
        protected override void OnStart(string[] args)
        {//服务启动时，执行该方法
            using (FileStream stream = new FileStream(filePath,FileMode.Append))
            using (StreamWriter writer = new StreamWriter(stream))
            {
                writer.WriteLine($"{DateTime.Now},服务启动！");
            }
        }
        protected override void OnStop()
        {//服务关闭时，执行该方法
            using (FileStream stream = new FileStream(filePath,FileMode.Append))
            using (StreamWriter writer = new StreamWriter(stream))
            {
                writer.WriteLine($"{DateTime.Now},服务停止！");
            }
        }
    }

public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        string serviceFilePath = $"{Application.StartupPath}\\MyWindowsService.exe";//MyWindowsService.exe 是项目名称对应的服务
        string serviceName = "DemoService"; //这里时服务名，是第五点中，设置的名称，要对应好

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                System.Diagnostics.Process myProcess = new System.Diagnostics.Process();
                myProcess.StartInfo.FileName = "cmd.exe";//启动cmd命令
                myProcess.StartInfo.UseShellExecute = false;//是否使用系统外壳程序启动进程
                myProcess.StartInfo.RedirectStandardInput = true;//是否从流中读取
                myProcess.StartInfo.RedirectStandardOutput = true;//是否写入流
                myProcess.StartInfo.RedirectStandardError = true;//是否将错误信息写入流
                myProcess.StartInfo.CreateNoWindow = true;//是否在新窗口中启动进程
                myProcess.Start();//启动进程
                //myProcess.StandardInput.WriteLine("shutdown -s -t 0");//执行关机命令
                myProcess.StandardInput.WriteLine("shutdown -r -t 60");//执行重启计算机命令
            }
            catch (Exception) { }
        }

        //停止服务
        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.IsServiceExisted(serviceName)) this.ServiceStop(serviceName);
            }
            catch (Exception ex)
            {
                MessageBox.Show("无法停止服务！"+ex.ToString());
            }
        }

        //事件：安装服务
        private void button3_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.IsServiceExisted(serviceName)) this.UninstallService(serviceName);
                this.InstallService(serviceFilePath);
                MessageBox.Show("安装服务完成");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
           
        }
        /// <summary>
        ///事件：卸载服务
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.IsServiceExisted(serviceName))
                {
                    this.ServiceStop(serviceName);
                    this.UninstallService(serviceFilePath);
                    MessageBox.Show("卸载服务完成");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            
        }

        //事件：启动服务
        private void button5_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.IsServiceExisted(serviceName)) this.ServiceStart(serviceName);
                MessageBox.Show("启动服务完成");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            
        }


        //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();
                }
            }
        }
    }