Have log4net use application config file for configuration data

Question

I would like to store log4net config data in my application config file  Based on my understanding of the documentation  I did the following    Add a reference to log4net dll Add the following line in AssemblyInfo cs      assembly  log4net Config XmlConfigurator Watch   true    Initialize the logger as follows   private static readonly ILog log   LogManager GetLogger typeof frmWizard     I have the following code in my app config         lt configSections gt         lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net    gt       lt  configSections gt       lt log4net gt         lt appender name  EventLogAppender  type  log4net Appender EventLogAppender   gt           lt layout type  log4net Layout PatternLayout  gt             lt conversionPattern value   date   thread   -5level  logger   property NDC   -  message newline    gt           lt  layout gt         lt  appender gt         lt root gt           lt level value  INFO    gt           lt appender-ref ref  ConsoleAppender    gt         lt  root gt       lt  log4net gt    However  when I run the application  I get the following error on the console       No appender named  Consoleappender  could be found    How can I get log4net to read settings from the config file   Thanks

User · Answer

Have you tried adding a configsection handler to your app config  e g    lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net   gt

User · Answer

Have you tried adding a configsection handler to your app config  e g    lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net   gt

User · Answer

All appender names must be reflected in the root section  In your case the appender name is EventLogAppender but in the  lt root gt   lt appender-ref    section it is named as ConsoleAppender  They need to match   You can add multiple appenders to your log config but you need to register each of them in the  lt root gt  section    lt appender-ref ref  ConsoleAppender    gt   lt appender-ref ref  EventLogAppender    gt    You can also refer to the apache documentation on configuring log4net

User · Answer

From the config shown in the question there is but one appender configured and it is named  EventLogAppender   But in the config for root  the author references an appender named  ConsoleAppender   hence the error message

User · Answer

Add a line to your app config in the configSections element   lt configSections gt    lt section name  log4net      type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0            Culture neutral  PublicKeyToken 1b44e1d426115821    gt   lt  configSections gt    Then later add the log4Net section  but delegate to the actual log4Net config file elsewhere      lt log4net configSource  Config Log4Net config    gt    In your application code  when you create the log  write  private static ILog GetLog string logName        ILog log   LogManager GetLogger logName       return log

User · Answer

Add a line to your app config in the configSections element   lt configSections gt    lt section name  log4net      type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0            Culture neutral  PublicKeyToken 1b44e1d426115821    gt   lt  configSections gt    Then later add the log4Net section  but delegate to the actual log4Net config file elsewhere      lt log4net configSource  Config Log4Net config    gt    In your application code  when you create the log  write  private static ILog GetLog string logName        ILog log   LogManager GetLogger logName       return log

User · Answer

Have you tried adding a configsection handler to your app config  e g    lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net   gt

User · Answer

I fully support  Charles Bretana s answer  However  if it s not working  please make sure that there is only one  lt section gt  element AND that configSections is the first child of the root element     configsections must be the first element in your app Config after configuration    lt  xml version  1 0   encoding  utf-8   gt   lt configuration gt     lt configSections gt       lt section name  log4net   type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0  Culture neutral  PublicKeyToken 1b44e1d426115821    gt     lt  configSections gt     lt  -- add log 4 net config  -- gt     lt  -- add others e g   lt startup gt   -- gt   lt  configuration gt

User · Answer

I fully support  Charles Bretana s answer  However  if it s not working  please make sure that there is only one  lt section gt  element AND that configSections is the first child of the root element     configsections must be the first element in your app Config after configuration    lt  xml version  1 0   encoding  utf-8   gt   lt configuration gt     lt configSections gt       lt section name  log4net   type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0  Culture neutral  PublicKeyToken 1b44e1d426115821    gt     lt  configSections gt     lt  -- add log 4 net config  -- gt     lt  -- add others e g   lt startup gt   -- gt   lt  configuration gt

User · Answer

From the config shown in the question there is but one appender configured and it is named  EventLogAppender   But in the config for root  the author references an appender named  ConsoleAppender   hence the error message

User · Answer

Add a line to your app config in the configSections element   lt configSections gt    lt section name  log4net      type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0            Culture neutral  PublicKeyToken 1b44e1d426115821    gt   lt  configSections gt    Then later add the log4Net section  but delegate to the actual log4Net config file elsewhere      lt log4net configSource  Config Log4Net config    gt    In your application code  when you create the log  write  private static ILog GetLog string logName        ILog log   LogManager GetLogger logName       return log

User · Answer

All appender names must be reflected in the root section  In your case the appender name is EventLogAppender but in the  lt root gt   lt appender-ref    section it is named as ConsoleAppender  They need to match   You can add multiple appenders to your log config but you need to register each of them in the  lt root gt  section    lt appender-ref ref  ConsoleAppender    gt   lt appender-ref ref  EventLogAppender    gt    You can also refer to the apache documentation on configuring log4net

User · Answer

Have you tried adding a configsection handler to your app config  e g    lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net   gt

User · Answer

Add a line to your app config in the configSections element   lt configSections gt    lt section name  log4net      type  log4net Config Log4NetConfigurationSectionHandler  log4net  Version 1 2 10 0            Culture neutral  PublicKeyToken 1b44e1d426115821    gt   lt  configSections gt    Then later add the log4Net section  but delegate to the actual log4Net config file elsewhere      lt log4net configSource  Config Log4Net config    gt    In your application code  when you create the log  write  private static ILog GetLog string logName        ILog log   LogManager GetLogger logName       return log

[c#] Have log4net use application config file for configuration data

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