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log4net log file is not getting created in C#

log file is not getting created,
using below call to get logger and config file.
is it required to give full path for file?
private static readonly log4net.ILog logger = log4net.LogManager.GetLogger
(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821" requirePermission="false"/>
</configSections>
<!-- Log4net Logging Setup -->
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="50" />
<maximumFileSize value="50MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
</configuration>

Does your code call
log4net.Config.XmlConfigurator.Configure();
on startup?
The <root> section I use has priority, not level:
<root>
<priority value="ALL" />
<appender-ref ref="LogFileAppender" />
</root>
(Apparently, that's not the issue https://stackoverflow.com/a/24188507/21336)

after adding below line in AssemblyInfo.cs, could see log file getting created and logs coming.
[assembly: log4net.Config.XmlConfigurator(Watch = true)]

log4net not logging errors and fatal in separate file

I tried to separate the errors and fatal into separate log file not i dont see it logging in separate file. here is my config file. can you point what mistake i made?
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="C:\NinjaTraderLogs\NinjaLogs.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="5" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level (%property{method}) (%property{state}) (%property{instrument}) - %message%newline" />
</layout>
<level value="All" />
</appender>
<appender name="FatalError" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="C:\NinjaTraderLogs\NinjaLogs_Fatal.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="5" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level (%property{method}) (%property{state}) (%property{instrument}) - %message%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
</appender>
<root>
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
</configuration>

Create one more appender ref as below under <root>
<root>
<appender-ref ref="RollingFileAppender" />
<appender-ref ref="FatalError" />
</root>
Before you call your logging in code make sure to call the XmlConfigurator function Configure (call it globally) like
log4net.Config.XmlConfigurator.Configure();
Last but not least, make sure you have write permission to the directory you are trying to create log file. I would suggest you to check windows event log once Application log to see if any error has happened.

log4net:ERROR Failed to find configuration section 'log4net'

I get this error when I try to configure my logger using:
log4net.Config.XmlConfigurator.Configure();
The app.config looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<root>
<level value="ALL" />
<appender-ref ref="LogFileAppender" />
</root>
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="C:\Logs\my-log-file.txt" />
<param name="AppendToFile" value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date [%thread] %-5level %logger [%C{1}.%M] - %message%newline" />
</layout>
</appender>
</log4net>
</configuration>
I'm trying to write separate logs for each component of a system. I have one working for the main class but I get this error when trying to configure another one for a different class. What is the cause?
Thanks in adv!

I ended up using the following to configure my Add-In and RTD:
[Add-In]
log4net.Config.XmlConfigurator.Configure(
new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "MyAdd-In.dll.config"));
[RTD]
log4net.Config.XmlConfigurator.Configure(
new FileInfo(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + "\\RtdServer.dll.config"));
Which then configured the separate logger for my RTD.
Hth

Cancel console printing

I have the following config file:
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,Log4net"/>
</configSections>
<log4net>
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="D:\log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="20" />
<maximumFileSize value="4MB" />
<staticLogFileName value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="LogFileAppender" />
</root>
</log4net>
Every line I am logging is written to Console as well, how can I cancel it?
I want it to be appended to the log.txt file ONLY, without anything in Console.

Either you have added console appender programmatically, or this configuration file is not used by log4net. Log4net don't add any default appenders (like default TraceListener in .net). And this configuration specifies only RollingFileAppender. So, verify which configuration file is used, and whether some appenders added in the code.

Why my dotnetOpenAuth fails using log4net?

I'm trying to debug why I get this error:
Error occurred while sending a direct message or getting the response.
on this line:
consumer.Channel.Send(consumer.PrepareRequestUserAuthorization(authCallbakUrl, null, null));
So I added log4net, but it doesn't work for me.
My web config:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- Others sections -->
<section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate" />
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler" requirePermission="false" />
</configSections>
<!-- log4net is a 3rd party (free) logger library that dotnetopenid will use if present but does not require. -->
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="RelyingParty.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date (GMT%date{%z}) [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<appender name="TracePageAppender" type="OpenIdRelyingPartyWebForms.Code.TracePageAppender, OpenIdRelyingPartyWebForms">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date (GMT%date{%z}) [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppender" />
<appender-ref ref="TracePageAppender" />
</root>
<!-- Specify the level for some specific categories -->
<logger name="DotNetOpenAuth">
<level value="ALL" />
</logger>
</log4net>
Tried with and without this:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="log4net" />
<bindingRedirect newVersion="4.0.30319" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
I configure the log4net instance
log4net.Config.XmlConfigurator.Configure();

Your binding redirect suggests you're using log4net v4.0.30319, which doesn't exist. The latest version is 1.2.11, and the version DNOA is compiled against is 1.2.10. Once you fix the binding redirect I suspect it will work.

GlobalApplication.cs:
decorate it
[assembly: log4net.Config.XmlConfigurator(Watch = true)]
To get a reference to logger from other places ex.:
ILog Logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);