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c#.netloggingnlogcommon.logging

Can NLog's variables be modified programatically if Common.Logging is in use?

I have an NLog variable that I want to set the value of at runtime, in C#:

LogManager.Configuration.Variables["MyVarName"] = DetermineMyVarValue();

But that's NLog code. I am considering using Common.Logging rather than directly using NLog. I do not see how to do this sort of thing through Common.Logging. Is there a way?

Alternatively, perhaps is there a way to do it at runtime from within the NLog config file itself? So that Common.Logging can be sidestepped? For example, something like:

<variable name="MyVarName" value="MyStaticClass.DetermineMyVarValue()"/>

Preferably where that function would be called once, upon first use, rather than being called every time the variable is referenced?

Solution

  • Haven't yet found a direct answer, but I have found something that's good enough for my purposes, so I'm mentioning it here in case it might help someone in the future:

    Instead of a variable, I just wrote a custom layout renderer, which is pretty straightforward.