Configure Log4Net in web application

Question

I have this code and the config file below   ILog log   LogManager GetLogger typeof MyClass    log Debug  Testing      TestProj directory is not created and if I create it  no TestLog txt file  no log     nothing   Any idea   Thanks   The config file   lt section name  log4net  type  log4net Config Log4NetConfigurationSectionHandler  log4net    gt    lt log4net debug  true  gt   lt appender name  RollingLogFileAppender  type  log4net Appender RollingFileAppender  gt     lt file value  C   TestProj  TestLog txt    gt     lt appendToFile value  true    gt     lt rollingStyle value  Size    gt     lt maxSizeRollBackups value  10    gt     lt maximumFileSize value  10MB    gt     lt staticLogFileName value  true    gt     lt layout type  log4net Layout PatternLayout  gt       lt conversionPattern value   -5p  d  5rms  -22 22c 1   -18 18M -  m n    gt     lt  layout gt   lt  appender gt    lt root gt     lt level value  DEBUG    gt     lt appender-ref ref  RollingLogFileAppender    gt   lt  root gt   lt  log4net gt

User · Accepted Answer

You need to call the Configurefunction of the XmlConfigurator  log4net Config XmlConfigurator Configure      Either call before your first loggin call or in your Global asax like this   protected void Application Start Object sender  EventArgs e       log4net Config XmlConfigurator Configure

User · Answer

1  Add the following line into the AssemblyInfo class   assembly  log4net Config XmlConfigurator Watch   true     2  Make sure you don t use  Net Framework 4 Client Profile as Target Framework  I think this is OK on your side because otherwise it even wouldn t compile   3  Make sure you log very early in your program  Otherwise  in some scenarios  it will not be initialized properly  read more on log4net FAQ    So log something during application startup in the Global asax  public class Global   System Web HttpApplication       private static readonly log4net ILog Log   log4net LogManager GetLogger typeof Global        protected void Application Start object sender  EventArgs e                Log Info  Startup application               4  Make sure you have permission to create files and folders on the given path  if the folder itself also doesn t exist   5  The rest of your given information looks ok

User · Answer

Another way to do this would be to add this line to the assembly info of the web application      Configure log4net using the  config file  assembly  log4net Config XmlConfigurator Watch   true     Similar to Shriek s

User · Answer

often this is due to missing permissions  The windows account the local IIS Application Pool is running with may not have the permission to write to the applications directory  You could create a directory somewhere  give everyone permission to write in it and point your log4net config to that directory  If then a log file is created there  you can modify the permissions for your desired log directory so that the app pool can write to it   Another reason could be an uninitialized log4net  In a winforms app  you usually configure log4net upon application start  In a web app  you can do this either dynamically  in your logging component  check if you can create a specific Ilog logger using its name  if not -  call configure    or again upon application start in global asax cs

User · Answer

I also had the similar issue  Logs were not creating    Please check logger attribute name should match with your LogManager GetLogger  name     lt logger name  Mylog  gt         lt level value  All  gt  lt  level gt         lt appender-ref ref  RollingLogFileAppender    gt       lt  logger gt     private static readonly ILog Log   LogManager GetLogger  Mylog

[c#] Configure Log4Net in web application

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