我做了一个 Windows 服务 "works" 但在启动时卡住了

Question

所以不久前我做了一个 windows 服务，它读取串行端口并根据返回的值改变系统音量。问题是当我运行服务时它卡在启动模式但仍然执行它应该执行的操作。但如果您将其设置为“启动时自动启动”，它将不起作用。这是我第一次做 windows 服务所以它可能有很多问题。

这是运行ning 的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using AudioSwitcher.AudioApi.CoreAudio;
using System.IO.Ports;
using System.Threading;

namespace audio_controller_WS
{
    public partial class AudioContorllerWS : ServiceBase
    {
        static bool _continue;
        static SerialPort _serialPort;
        public AudioContorllerWS()
        {
            InitializeComponent();

           


        }
        public static void Read()
        {
            CoreAudioDevice defaultPlaybackDevice = new CoreAudioController().DefaultPlaybackDevice;
            while (_continue)
            {
                try
                {
                    String message = _serialPort.ReadLine();
                    int convert = int.Parse(message);
                    defaultPlaybackDevice.Volume = convert;
                }
                catch (Exception)
                { }

            }
        }
        protected override void OnStart(string[] args)
        {
                      // string message;
            StringComparer stringComparer = StringComparer.OrdinalIgnoreCase;
            Thread readThread = new Thread(Read);

            // Create a new SerialPort object with default settings.
            _serialPort = new SerialPort();

            // Allow the user to set the appropriate properties.
            _serialPort.PortName = "COM10";
            _serialPort.BaudRate = 9600;
            _serialPort.DataBits = 8;
            // Set the read/write timeouts
            _serialPort.ReadTimeout = 500;
            _serialPort.WriteTimeout = 500;

            _serialPort.Open();
            _continue = true;
            readThread.Start();
            readThread.Join();
            _serialPort.Close();

        }
        protected override  void OnContinue()
        {

        }


        protected override void OnStop()
        {
        }
    }
}

我知道我的代码不应该运行在启动时启动，但我无法正常工作。

Answer 1

您需要让 OnStart 方法退出。试试这个：

public partial class AudioContorllerWS : ServiceBase
{
    static bool _continue;
    static SerialPort _serialPort;
    static Thread readThread;
    
    public AudioContorllerWS()
    {
        InitializeComponent();         
    }
    
    public static void Read()
    {
        CoreAudioDevice defaultPlaybackDevice = new CoreAudioController().DefaultPlaybackDevice;
        while (_continue)
        {
            try
            {
                String message = _serialPort.ReadLine();
                int convert = int.Parse(message);
                defaultPlaybackDevice.Volume = convert;
            }
            catch (Exception)
            { }
        }
    }
    
    protected override void OnStart(string[] args)
    {
        // string message;
        StringComparer stringComparer = StringComparer.OrdinalIgnoreCase;
        readThread = new Thread(Read);

        // Create a new SerialPort object with default settings.
        _serialPort = new SerialPort();

        // Allow the user to set the appropriate properties.
        _serialPort.PortName = "COM10";
        _serialPort.BaudRate = 9600;
        _serialPort.DataBits = 8;
        // Set the read/write timeouts
        _serialPort.ReadTimeout = 500;
        _serialPort.WriteTimeout = 500;

        _serialPort.Open();
        _continue = true;
        readThread.Start();
        // don't join
    }

    protected override  void OnContinue()
    {
    }


    protected override void OnStop()
    {
        _continue = false;
        readThread.Join(timeout);
        _serialPort.Close();
        // abort it if it hasn't exited
    }
}

我做了一个 Windows 服务 "works" 但在启动时卡住了

I have made a Windows service that "works" but is stuck in at starting up

c#

windows-services