Sullivan008 / CSharp-LOG4NET-Example

C# - Logging Example with log4net Nuget Package [Year of Development: 2017]

C# - Logging Example with log4net Nuget Package [Year of Development: 2017]

About the application technologies and operation:

Technologies:

• Programming Language: C#
• FrontEnd Side: Console Application
• BackEnd Side: .NET Framework 4.5.2.

Installation/ Configuration:

1. Restore necessary Packages, run the following command in PM Console

   Update-Package -reinstall
   

2. Configure log4net using the .config file in AssemblyInfo.cs file

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

About the application:

The Apache log4net library is a tool to help the programmer output log statements to a variety of output targets.

The application shows the following:

• How you can Logging in a Console Application with Apache log4net package.

Configuration Helping:

1. How to show logging output in the console.

   <appender name="Console" type="log4net.Appender.ConsoleAppender">
       <layout type="log4net.Layout.PatternLayout">
           <conversionPattern value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
   </appender>

2. How to logging in one log file an INFO, DEBUG, WARN, FATAL, ERROR

    <appender name="Console" type="log4net.Appender.ConsoleAppender">
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="[%level] - %date - %type.%method, row: %line - %message%n"/>
        </layout>
      </appender>
   
    <appender name="LOGSRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
        <param name="File" value="logs\logs.log" />
        <param name="AppendToFile" value="true" />
        <param name="MaxSizeRollBackups" value="10" />
        <param name="MaximumFileSize" value="10240KB" />
        <param name="RollingStyle" value="Size" />
        <param name="StaticLogFileName" value="true" />
        <layout type="log4net.Layout.PatternLayout,log4net">
            <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
        </layout>
    </appender>
   
    <root>
        <level value="ALL" />
        <appender-ref ref="LOGSRollingLogFileAppender" />
    </root>

3. How to separate log files by INFO, DEBUG, WARN, FATAL, ERROR

   <appender name="InfoRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
       <param name="File" value="logs\info.log" />
       <param name="AppendToFile" value="true" />
       <param name="MaxSizeRollBackups" value="10" />
       <param name="MaximumFileSize" value="5120KB" />
       <param name="RollingStyle" value="Size" />
       <param name="StaticLogFileName" value="true" />
       <param name="Threshold" value="INFO"/>
       <layout type="log4net.Layout.PatternLayout,log4net">
           <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
           <levelMin value="INFO"/>
           <levelMax value="INFO"/>
       </filter>
   </appender>
      
   <appender name="DebugRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
       <param name="File" value="logs\debug.log"/>
       <param name="AppendToFile" value="true" />
       <param name="MaxSizeRollBackups" value="10" />
       <param name="MaximumFileSize" value="5120KB" />
       <param name="RollingStyle" value="Size" />
       <param name="StaticLogFileName" value="true" />
       <param name="Threshold" value="DEBUG"/>
       <layout type="log4net.Layout.PatternLayout,log4net">
           <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
           <levelMin value="DEBUG"/>
           <levelMax value="DEBUG"/>
       </filter>
   </appender>
     
   <appender name="ErrorRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
       <param name="File" value="logs\error.log"/>
       <param name="AppendToFile" value="true"/>
       <param name="MaxSizeRollBackups" value="10"/>
       <param name="MaximumFileSize" value="5120KB"/>
       <param name="RollingStyle" value="Size"/>
       <param name="StaticLogFileName" value="true"/>
       <param name="Threshold" value="ERROR"/>
       <layout type="log4net.Layout.PatternLayout,log4net">
           <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
           <levelMin value="ERROR"/>
           <levelMax value="ERROR"/>
       </filter>
   </appender>
    
   <appender name="WarnRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
       <param name="File" value="logs\warn.log"/>
       <param name="AppendToFile" value="true"/>
       <param name="MaxSizeRollBackups" value="10"/>
       <param name="MaximumFileSize" value="5120KB"/>
       <param name="RollingStyle" value="Size"/>
       <param name="StaticLogFileName" value="true"/>
       <param name="Threshold" value="WARN"/>
       <layout type="log4net.Layout.PatternLayout,log4net">
           <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
           <levelMin value="WARN"/>
           <levelMax value="WARN"/>
       </filter>
   </appender>
     
   <appender name="FatalRollingLogFileAppender" type="log4net.Appender.RollingFileAppender,log4net">
       <param name="File" value="logs\fatal.log" />
       <param name="AppendToFile" value="true"/>
       <param name="MaxSizeRollBackups" value="10"/>
       <param name="MaximumFileSize" value="5120KB"/>
       <param name="RollingStyle" value="Size"/>
       <param name="StaticLogFileName" value="true"/>
       <param name="Threshold" value="FATAL"/>
       <layout type="log4net.Layout.PatternLayout,log4net">
           <param name="ConversionPattern" value="[%level] - %date - %type.%method, row: %line - %message%n"/>
       </layout>
       <filter type="log4net.Filter.LevelRangeFilter">
           <levelMin value="FATAL"/>
           <levelMax value="FATAL"/>
       </filter>
   </appender>
   
   <root>
       <level value="debug" />
       <appender-ref ref="InfoRollingLogFileAppender" />
       <appender-ref ref="DebugRollingLogFileAppender" />
       <appender-ref ref="ErrorRollingLogFileAppender" />
       <appender-ref ref="WarnRollingLogFileAppender" />
       <appender-ref ref="FatalRollingLogFileAppender" />
   </root>