Rollingfile relative path not working in ASP.NET MVC + IIS Express

I’m using the serilog on first application, it’s ASP.NET MVC app + IIS Express using serilog, configured with following AppSetting configs,

<add key="serilog:minimum-level" value="Verbose" />
<add key="serilog:write-to:RollingFile.pathFormat" value="logs\log-{Date}.txt" />
<add key="serilog:write-to:RollingFile.retainedFileCountLimit" value="3" />

the application creates log file at C:\Program Files (x86)\IIS Express\logs\

Is there a way to to use the relative path. It works if i use a full path!

I’m using log4net in other MVC apps, it resolves to relative path, though!

[nblumhardt]

Folks, if anyone has ideas for baking this in more elegantly I’d be interested; for now I think the following in Global.asax.cs before configuring the logger:

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

and the following config:

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

is a pretty good option. @SathishN thanks again for the input on this!

[codecypher]

Here is how I did it with an ASP.NET MVC 4/5 application.

Add the following to the web.config file:

<add key="serilog:minimum-level" value="Information" />
<add key="serilog:minimum-level:override:Microsoft" value="Information" />
<add key="serilog:minimum-level:override:System" value="Information" />
<add key="serilog:using:RollingFile" value="Serilog.Sinks.RollingFile" />
<add key="serilog:write-to:RollingFile.pathFormat" value="./Logs/log-{Date}.txt" />
<add key="serilog:write-to:RollingFile.outputTemplate" value="{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level}] [{SourceContext}] {Message}{NewLine}{Exception}" />
<add key="serilog:write-to:RollingFile.retainedFileCountLimit" value="10" />

Then add the following to the Application_Start in Global.asax:

// Get application base directory
string basedir = AppDomain.CurrentDomain.BaseDirectory;

// Setup Serilog for logging
Log.Logger = new LoggerConfiguration()
            .ReadFrom.AppSettings()
            .WriteTo.RollingFile(basedir + "/Logs/log-{Date}.txt")
            .CreateLogger();