Log4Net - 为级别类型设置conversionPattern

Question

我试图在我的C＃WinForms App.config中设置Log4Net，并希望为Debug / Fatal / Info等设置不同的conversionPattern。有谁知道怎么做？

Answer 1

You can only do one conversion pattern per appender. However Appenders can have level filters. You could create a different appender for each conversion pattern and then apply the appropriate filter. For example:

<appender>
  <filter type="log4net.Filter.LevelMatchFilter">
    <levelToMatch value="ERROR"/>
  </filter>
</appender>

This log4net Tutorial has all the details.

Answer 2

I'm pretty sure its not possible to assign a different conversion pattern on an appender per log level.

You could create multiple appenders with differing thresholds and setup different conversion patterns per appender. This still wont get you 100% of what you're after however.

Answer 3

you can use pattern layout converter https://devstuffs.wordpress.com/2012/01/12/creating-your-own-pattern-layout-converter-for-log4net/

In the convert function you get the log level and then you can provide pattern depends on the level.