Add a reference to log4net.dll
1: In the APP.CONFIG write the following:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net"
type="System.Configuration.IgnoreSectionHandler" />
</configSections>
<!-- This section contains the log4net configuration settings -->
<log4net>
<!-- Define some output appenders -->
<appender name="RollingLogFileAppender"
type="log4net.Appender.RollingFileAppender">
<param name="File" value="logs/RReaderRoll.txt" />
<param name="AppendToFile" value="true" />
<param name="MaxSizeRollBackups" value="10" />
<param name="MaximumFileSize" value="15000" />
<param name="RollingStyle" value="Size" />
<param name="StaticLogFileName" value="true" />
<param name="ImmediateFlush" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d %-5p %c{1} [%x] -
%m%n" />
</layout>
</appender>
<appender name="LogFileAppender"
type="log4net.Appender.FileAppender">
<param name="File" value="logs/RReaderAll.txt" />
<!-- Example using environment variables in params -->
<!-- <param name="File" value="${TMP}\\log-file.txt" /> -->
<param name="AppendToFile" value="true" />
<param name="ImmediateFlush" value="true" />
<!-- An alternate output encoding can be specified -->
<!-- <param name="Encoding" value="unicodeFFFE" /> -->
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d %-5p %c{1} [%x]
<%X{auth}> - %m%n" />
</layout>
<!-- Alternate layout using XML
<layout type="log4net.Layout.XMLLayout" />
-->
</appender>
<appender name="ConsoleAppender"
type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d %-5p %c{1} [%x]
<%X{auth}> - %m%n" />
</layout>
</appender>
<!-- Setup the root category, add the appenders and set the default
level -->
<root>
<level value="INFO" />
<appender-ref ref="LogFileAppender" />
<appender-ref ref="ConsoleAppender" />
</root>
<!-- Specify the level for some specific categories -->
<logger name="Riag.CCard.ResponseReader.ReaderMain">
<level value="ALL" />
<appender-ref ref="RollingLogFileAppender" />
</logger>
</log4net>
</configuration>
2. In the class
class ReaderMain
{
// Create a logger for use in this class using Log4Net.
private static readonly log4net.ILog log =
log4net.LogManager.GetLogger(System.Reflection.Met hodBase.GetCurrentMethod().DeclaringType);
....
....
3. In the code write
log.Error("Unable to process xml file.");
log.Info("Unable to process xml file.");
log.Fatal("Unable to process xml file.");