Log4Net(for Making logger file)

//This is the link where you can read about log4Net
//open source provide by Microsoft

http://www.codeproject.com/KB/dotnet/Log4net_Tutorial.aspx
http://www.beefycode.com/post/Log4Net-Tutorial-pt-1-Getting-Started.aspx

http://shiman.wordpress.com/2008/07/09/how-to-log-in-c-net-with-log4net-a-tutorial/Here is
great example for sending logfile into mail......

use the logger to log a few statements with various severity levels. log4net defines 5 such levels:
Log4Net supports five levels of logs with five methods.

Debug: fine-grained statements concerning program state, typically used for debugging;

Info: informational statements concerning program state, representing program events or behavior tracking;

Warn: statements that describe potentially harmful events or states in the program;

Error: statements that describe non-fatal errors in the application; this level is used quite often for logging handled exceptions;

Fatal: statements representing the most severe of error conditions, assumedly resulting in program termination.

we have to add Log4Net Dll in Add reference section.

after that Inside the AssemblyInfo.cs

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Web.config", Watch = true)]

and add some code in web.config file..

section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,Log4net" requirePermission="false"/>


log4net debug="true">
appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
file value="Log4net\\log4net.txt"/>
appendToFile value="true"/>
rollingStyle value="Size"/>
maxSizeRollBackups value="10"/>
maximumFileSize value="50KB"/>
staticLogFileName value="true"/>
lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
layout type="log4net.Layout.PatternLayout">
conversionPattern value="%-5p %d %5rms %-22.22c{1} %-18.18M - %m%n"/>
/layout>
/appender>
root>
level value="ALL"/>
appender-ref ref="RollingLogFileAppender"/>
/root>
/log4net>



add key="log4net.Internal.Debug" value="true" />
/appSettings>



//////////and Inside the .cs page

using log4net;//Add class in page

//Define Globally
private static readonly log4net.ILog log = log4net.LogManager.GetLogger("_Default");

//use like this
protected void Page_Load(object sender, EventArgs e)
{
try
{
int a = 0;
int b = 1;
int c = b / a;
}
catch (Exception ex)
{
log.Error(ex.Message, ex);//here is using
}
}