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  2. Why are all my log4net levels false?

Why are all my log4net levels false?

由 假如想象 提交于 2019-11-30 10:49:56

I have had this same problem. I get around it by using the below line of code in the Application_Start method in the Global.asax.cs (assuming its a .Net web application)

log4net.Config.XmlConfigurator.Configure();

Change your line to following in AssemblyInfo.cs:

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

and put log4net's configuration in that file.

nemesv

Log4net expects its config section not to be grouped. Because in your config you have put your log4net section inside an ApplicationSettingsGroup (applicationSettings) log4net won't find its configuration. You can move the log4net section outside of the group or you can specify the group when calling XmlConfigurator.Configure:

XmlConfigurator.Configure(
    ConfigurationManager.GetSection(
        "applicationSettings/log4net") as XmlElement);

It seems that you missed config file property setting changes Copy to Output Directory = "Copy always" Please check this setting image for more details. Config file setting Properties

Log levels are case-sensitive, so instead of:

<level value="All" />

should be

<level value="ALL" />

I also find it much easier to create a separate log4net configuration file. Create a file called log4net.config and set the property of Copy to Output Directory to Copy always -- (copying your configuration from App.config into this file)

Then, when setting the configuration use:

XmlConfigurator.Configure(new System.IO.FileInfo("log4net.config"));

I've never seen <level value="All" /> before, usually I just set value to one of the levels (since they're inclusive of the levels above them, or below them as you have them listed in your config, in the level stack). Something like this:

<level value="DEBUG" />

You might also try testing it with an explicit logger, just to see if the problem might be something else. Something simple adjacent to the appender node(s) like this:

<logger name="Log4NetTEST" >
  <level value="DEBUG" />
  <appender-ref ref="AdoNetAppender" />
</logger>

Then when testing it in your code you'd create the logger like this:

LogManager.GetLogger("Log4NetTEST");
Ramesh B

You failed to initialize log4net in your application. This can be initialized explicitly by placing below at 'Application_Start',

log4net.Config.XmlConfigurator.Configure();

Change your line to following in AssemblyInfo.cs:

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

Ensure log4net dll is added and Also put log4net's configuration in web.config file as 

<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler" />
  </configSections>
  <log4net>
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingFileAppender" />
    </root>
    <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="C:\LOGS\IDMUserRoleManagement\IDMUserRoleManagement.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="5" />
      <maximumFileSize value="1000KB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%d{yyyy-MM-ddTHH:mm:ss} %-5p [%t] - %m%n" />
      </layout>
    </appender>
  </log4net>
</configuration>

There is not setter for IsDebugEnabled as it is read only..

Use log4net.Config.XmlConfigurator.Configure(); in any method before you use log

and in app.Config the setting should be :

    <root>
      <level value="ALL" />
      <appender-ref ref="AppenderName" />
    </root>

You're missing the opening tag for applicationSettings. That could be the cause

In my case this was due to the fact that the <configSections> was not the first tag of the <configuration> section. This prevents the section name log4net being recognized. So the log instance shows the IsDebugEnabled and all the others as default boolean false.

This should be like this. 

<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,Log4net" />    
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
<configuration>
ibamboo

if class log file (Log4NetLogger) is in a alone class library, then the code: [assembly: log4net.Config.XmlConfigurator(C.... should be in the same class library.

for example: lib 1: my.web (a mvc project) lib 2: my.common (a class library project)

if you wrap logmanager code in my.common, then "[assembly: log4net.Config.XmlConfigurator(C..." SHOULD BE IN my.common, if you put it in my.web, it will not work!

Edit:

The usage of all config files (app.config, web.config, log4net.config, etc) is context based. So if you have a app calling a class library the config file that will be used is the .Config in the App project not the class library.

Another example, if you're Unit Testing an app the context is the Unit Test project and that's which config file will be used, not the app's config.

I had the same problem. I was using a separate file and named it log.config. All I needed to do was mark the file property "Copy to Output Directory" to "Copy Always" in solution explorer in Visual Studio. That did the trick for me.

You might want to add the good old System Diagnostics to figure out why log4net is not working.

Add this to your app or web config file and check the log.txt file :

<system.diagnostics>
  <trace autoflush="true" indentsize="4">
    <listeners>
      <add name="consoleListener" type="System.Diagnostics.ConsoleTraceListener"/>
      <add name="textWriterListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="log.txt"/>
      <remove name="Default"/>
    </listeners>
  </trace>
</system.diagnostics>

This was my case:

log4net: config file [C:\proj\bin\Debug\log4net.config] not found. Configuration unchanged.

Had to change to copy the log4net.config properties to Copy Always as explained in another answer.

标签
c#
asp.net-mvc-3
log4net
log4net-configuration
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