Adding method name in NLog

Question

I am using NLog and following the recommended pattern of having a log declare on each class, for the purpose of being able to track which class/method has written to the log. I do find this very useful to have a bit of a top level 'stack trace' with each log write.

My code used to look like this:

class SomeClass {

  private static readonly Logger logger = LogManager.GetCurrentClassLogger();
     void DoStuff()   {
      logger.Debug("stuff");   }   

}

I recently had the requirement my single project to write to 3 separate log files, and to do this, I added multiple loggers and targets as specified here: https://stackoverflow.com/a/21711838/191206

However, now in my log files, I have lost the class level name. It now just writes the log name that I specified in the NLog.config. I've considered simply adding the method name myself with a call to

System.Reflection.MethodBase.GetCurrentMethod(); // use Name property

or using something else in Reflection like this

However, I'm wondering if NLog has something built into this that I'm missing? The Debug() method I only see the ability to write a string, with parameters & optionally formatted..

Is this built into NLog?

Have you checked the [`${callsite}` layout renderer](https://github.com/nlog/nlog/wiki/Callsite-Layout-Renderer) ? — nemesv, Feb 22 '14 at 08:42
that was it - could you answer this question with that solution so I could give you proper credit? thanks — dferraro, Feb 24 '14 at 19:12

score 64 · Accepted Answer · edited May 02 '17 at 15:23

There is a built in layout renderer called ${callsite} that you can use to include the call site information (class name, method name and source information) in your log entries:

<targets>
  <target
    name="task1File"
    xsi:type="File"
    layout="${callsite} - ${message}"
    fileName="${basedir}../Data/debugLog1.txt"
    archiveAboveSize ="5000000"
    maxArchiveFiles="2"/>
  <target
    name="task2File"
    xsi:type="File"
    layout="${callsite} - ${message}"
    fileName="${basedir}../Data/debugLog2.txt"
    archiveAboveSize ="5000000"
    maxArchiveFiles="2"/>
</targets>

Adding method name in NLog

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