NLog: How to use different layout for different levels?

问题

I saw this old question: How to apply different layouts to the same target in NLog?

The answer was: to use different targets for different levels. I'm not sure this will always work correctly.

A lot of time has passed since. Maybe now there is a better way?

回答1:

You could create a custom layout, which has conditions. It will look like the CompoundLayout

e.g.

<layout type='ConditionalLayout'>
    <if condition="">
        <layout type='JsonLayout'> ...</layout>
    </if>
    <if condition="">
        <layout type='JsonLayout'> ...</layout>
    </if>

</layout>

The code file for CompoundLayout is here: https://github.com/NLog/NLog/blob/dev/src/NLog/Layouts/CompoundLayout.cs

回答2:

It looks like no another ways to use different layout with one target.

And probably better just to use custom layout.

来源：https://stackoverflow.com/questions/54747376/nlog-how-to-use-different-layout-for-different-levels