Log4Net and .NET 4.0

Question

There have not been any log4net release for some time. This has not presented any problems with 3.5, but what about .NET 4? Has anyone heard any rumblings about a release to support the version 4 framework when it comes out?

Answer 1

"With .NET 4. Projects you can still use log4net. You will have to change the target platform to ".NET Framework 4" on the project..."

Is correct. But you need to put the line

<startup>
   <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>

to the bottom of the configuration file (after the log4net setup):

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
  <log4net>
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="logfile.txt" />
      <appendToFile value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date: %-5level – %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="DEBUG" />
      <appender-ref ref="FileAppender" />
    </root>
  </log4net>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
  </startup>
</configuration>

Tested with log4net 1.2.10.0 You need to put the line: [assembly: log4net.Config.XmlConfigurator(Watch = false)] in Assemblyinfo.cs (I forgot that)