.Net Core Worker Service 作为 Windows 服务运行时找不到 log4net.config

Question

I have these projects in my solution:

1. .Net Core 3.1 Worker Service
2. .Net Core 3.1 Class library - for configure the log4net

But my log4net.config file is inside my worker service project. When I'm debugging, it is logging to the file which is configured in the log4net.config .

But when I install the Worker Service as a Windows service, it doesn't log to the file.

And when I checked the log4net.config location it has these values:

1. When debugging: D:\\myrepos\\webapicore\\Development\\Message.Consumer\\log4net.config
2. When running as a service: C:\\WINDOWS\\system32\\log4net.config

So I believe, since the log4net.config is not available in C:\\WINDOWS\\system32\\ it cannot do the logging.

UPDATE: I'm using following code to retrieve the log4net.config

var logRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
XmlConfigurator.Configure(logRepository, new FileInfo("log4net.config"));

Any idea to solve this?

Thanks.

Answer 1

I have installed and configured log4net in a different class library. So when I was getting the Assembly.GetEntryAssembly() it was actually not giving the assembly location of where log4net has been installed.

Therefore I changed the this code part:

var logRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
XmlConfigurator.Configure(logRepository, new FileInfo("log4net.config"));

Into:

var dirname = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
XmlConfigurator.Configure(new FileInfo(string.Format("{0}{1}", dirname, @"\log4net.config")));

This worked for me.

Answer 2

This worked for me too with my .NET 5 WorkerService .

You could also use AppDomain.CurrentDomain.BaseDirectory , instead.

However, I then found out that you can simply create an AssemblyInfo.cs file (Add new item ...) and add

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

Just like before with .NET Framework 4.5, etc.