Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Enable environment variables in Log4Net file name value

Posted on 2010-09-17
6
1,304 Views
Last Modified: 2012-05-10
I'm wondering why I can't seem to use environment variables in the following settings in a .config file for a .net application:

<appender name="RollingLogFile" type="log4net.Appender.RollingFileAppender">
      <param name="File" value="..\\Logg\\Dashboard\\logfilename.log"/>
      <param name="AppendToFile" value="true"/>
      <param name="MaxSizeRollBackups" value="3"/>
      <param name="MaximumFileSize" value="5MB"/>
      <param name="RollingStyle" value="Size"/>
      <param name="StaticLogFileName" value="true"/>
      <param name="CountDirection" value="-1"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] &lt;%X{auth}&gt; - %m%n"/>
      </layout>

Open in new window


If I try to use i.e. ${USERNAME}.log it only creates a new file with the filename ${USERNAME}.log instead of a username.

What is the correct syntax/variable to use for this, if possible at all?

This is a Windows environment
0
Comment
Question by:beester
  • 3
  • 2
6 Comments
 
LVL 13

Expert Comment

by:Corey2
ID: 33702525
Try using %USERNAME% I believe with log4net you have to use command line syntax for file name and path.
0
 
LVL 7

Author Comment

by:beester
ID: 33712215
Nope, doesn't seem to help. Tried ${%USERNAME%}, env{%USERNAME%}, {%USERNAME%} and just %USERNAME%, and all it does is to create a log file with the name as I write it, it doesn't parse the environment variables...
0
 
LVL 13

Accepted Solution

by:
Corey2 earned 500 total points
ID: 33713189
I recall running into an issue with this with the rolling log file appender I have been configuring it through code instead of  Settings.


            Dim apdr As New Appender.RollingFileAppender()
            Dim layout As New log4net.Layout.PatternLayout("%date [%thread] %-5level %logger [%property{NDC}] - %message%newline")
            Dim Folder As String = My.Computer.FileSystem.SpecialDirectories.Temp
            With apdr
                .LockingModel = New log4net.Appender.RollingFileAppender.MinimalLock()
                .Name = "MyApplication Log"
                'Appears to be in bytes so this = 1mb
                .MaxFileSize = 1049000
                .AppendToFile = True
                .File = IO.Path.Combine(Folder, "MyApplication.log")
end with

Open in new window

0
 
LVL 7

Author Comment

by:beester
ID: 33765669
I checked with our head programmer, and he said that this wasn't a viable solution for us. But he also said he thought this was solved in a newer Log4Net than the one we use, so I guess I'll try upgrading first...
0
 
LVL 13

Expert Comment

by:Corey2
ID: 33928589
Which version of log4net are you using?
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question