How to tell NLog to log exceptions?

Question

Target:

<targets>
    <target name="file" xsi:type="File" layout="${longdate} ${level} ${message} ${exception}" fileName="${basedir}/log.txt" archiveAboveSize="10485760" />
</targets>

When I call Logger.Error("some message", e), where e is some exception object, it only logs the message, not the exception information. I need it to output exception message and stack trace. Any ideas what I am doing wrong?

Promptbook

Answer 1

Try to use ${exception:innerFormat=Message,StackTrace}. Here is the documentation.

Sailfish

How do you make this work with NLogViewer or Chainsaw targets? I want to use an UDP logger, such as Sentinel or Log2Console. – Limey

<target name="udp" xsi:type="Chainsaw" address="udp4://localhost:7071" /> <logger name="*" minlevel="Trace" writeTo="udp" /> – Beare

Answer 2

I've found ${exception:format=tostring} to be the best format for logging full details.

NLog - How to Log Exceptions

Ewe

For NLog >v5.0 you can use ${message:withexception=true}, see here. – Thoughtful

Answer 3

Yep try adding

includeSourceInfo="true"

to your target file, like;

 <target name="viewer"
            xsi:type="NLogViewer"
            includeSourceInfo="true"
            address="udp://127.0.0.1:9999" />

Antoinette