serilog - How can I add a named property that is not part of the message template? -

in cases, add contextual information message (for instance authenticated user), without having include in message template.

i accomplish :

logger.information("doing stuff {foo} thing {bar}. {user}", foo, bar, user)

but without {user} in template.

i know logcontext seems overkill when adding contextual information 1 event.

i know can use low-level api logger.write(logevent evnt) control properties included, seems bit code trying accomplish.

i'm pretty sure there short , elegant way super obvious, haven't found :)

update :

i found out afterwards question more or less similar : add custom properties serilog

i figure out on own!

you can use fluent method .forcontext(propertyname, propertyvalue) on single call 1 of .logxxx() methods.

for instance :

logger.forcontext("user", user)       .information("doing stuff {foo} thing {bar}", foo, bar)

the property added event apply event, , no longer present on next call logger.logxxx() method

update

Script