Logging in multiple files using NLog

Question

I am using NLog for logging purpose.

My code is as follows:

<?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">    <!-- make sure to set 'Copy To Output Directory' option for this file -->   <!-- go to http://nlog-project.org/wiki/Configuration_file for more information -->    <targets>     <target       name="logfile"       xsi:type="File"       layout="${message}"       fileName="${basedir}../Data/debugLog1.txt"       archiveAboveSize ="5000000"       maxArchiveFiles="2"/>   </targets>    <rules>     <logger name="*" minlevel="Trace" writeTo="logfile" />   </rules> </nlog> 

I am logging data in debugLog1.txt. Now, from another location in the project, I also want to log data, but this data is of another type so I want to make a debugLog2.txt and log data to it. How can I modify my code above to do so?

Answer 1

I think you need to define another logger.

<logger name="SpecialLogger" minlevel="Trace" writeTo="logfile2" /> 

To log to it:

var logger = LogManager.GetLogger("SpecialLogger"); 

Answer 2

If you want a separate file to log information from another part of your program, you can add a logger and another target.

For example, if you have a program that is completing two different tasks and you want to log those tasks separately, you could do the following

<targets>   <target     name="task1File"     xsi:type="File"     layout="${message}"     fileName="${basedir}../Data/debugLog1.txt"     archiveAboveSize ="5000000"     maxArchiveFiles="2"/>   <target     name="task2File"     xsi:type="File"     layout="${message}"     fileName="${basedir}../Data/debugLog2.txt"     archiveAboveSize ="5000000"     maxArchiveFiles="2"/> </targets>  <rules>   <logger name="task1Logger" minlevel="Trace" writeTo="task1File" />   <logger name="task2Logger" minlevel="Trace" writeTo="task2File" /> </rules> 

Then, in your program, access them with:

var task1Logger = NLog.LogManager.GetLogger("task1Logger") var task2Logger = NLog.LogManager.GetLogger("task2Logger")