serilog appSettings write to file in the same server path asp.net mvc

Question

I have a serilog code and I want to move the configuration to the web.config file. everything works fine but the problem is with the path of the file: ``` var logFileName = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"EnBW.DokumentErfassung.Web-{Environment.MachineName}.log"); Log.Logger = new LoggerConfiguration() .ReadFrom.AppSettings(); ``` I want to write the new file in the same server path, the web.config code is: ``` ``` but the files saved has been saved in C:/program file/ ..... I want it to be saved in the same Domain path. what should I do?

Accepted Answer

The app settings provider supports environment variables, so in Global.asax.cs before configuring the logger:

```
Environment.SetEnvironmentVariable("BASEDIR", AppDomain.CurrentDomain.BaseDirectory);
```

And use `%BASEDIR%` in config:

```
<add key="serilog:write-to:RollingFile.pathFormat"
     value="%BASEDIR%\logs\log-{Date}.txt" />
```

serilog appSettings write to file in the same server path asp.net mvc

Solution

Problem