Windows服务未在C＃中写入其日志文件

Question

I want to start with Windows service in C#. I would start with a simple service that would print:

Hello (as soon service start)
Goodbye (as soon service stop)

This should be pretty simple, and genuinely, in VB.net I would achieve this easily. So I've created a new C# Windows Service project, imported log4net with nuGet package manager . Then I've the service class:

public partial class Service1 : ServiceBase
{
    private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
    public Service1()
    {
        InitializeComponent();
    }

    protected override void OnStart(string[] args)
    {
        log.Info("hello");    
    }

    protected override void OnStop()
    {
        log.Info("goodbye");
    }
}

and so VS creates the static class:

static class Program
{        
    static void Main()
    {
        ServiceBase[] ServicesToRun;
        ServicesToRun = new ServiceBase[] 
        { 
            new Service1() 
        };
        log.Info("NewService1");
        ServiceBase.Run(ServicesToRun);
    }
}

This is the App.config with log4net configuration:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
      <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    </configSections>
    <log4net>
      <root>
        <level value="DEBUG" />
        <appender-ref ref="FileAppender" />
        <appender-ref ref="ConsoleAppender" />
      </root>
      <appender name="FileAppender" type="log4net.Appender.FileAppender">
        <file value="C:\logging\operativity.log" />
        <appendToFile value="true" />
        <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date{dd/MM/yyyy HH:mm:ss.fff} - %level - %message%newline" />
        </layout>
      </appender>
      <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date{dd/MM/yyyy HH:mm:ss} - %level - %message%newline" />
        </layout>
      </appender>
    </log4net>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>

I've installed a service installer, so i've installed the service with installutil and started it (with success), but, alas, no hello/goodbye are logged. This style of logging is the same that I used in another project and it worked without any problems.

Why I can't get no hello this time?

Answer 1

假设您没有隐藏或删除示例中的任何代码，则需要在调用任何日志方法（Info，Debug等）之前配置log4net：

log4net.Config.XmlConfigurator.Configure();