log4net Tutorial

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Log4NetTest
{
    public partial class frmMain : Form
    {
        //Here is the once-per-class call to initialize the log object
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        public frmMain()
        {
            InitializeComponent();

        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            //You should try to call the logger as soon as possible in your application
            log.Debug("Application started");
        }

        //This method hooks to the button on the strt of the form.  When
        //you click the button, you call every type of log method available
        private void butRunTest_Click(object sender, EventArgs e)
        {
            log.Debug("Debug logging");
            log.Info("Info logging");
            log.Warn("Warn logging");
            log.Error("Error logging");
            log.Fatal("Fatal logging");

            //This is where we call the logger from a different class
            OtherClass.TestLogger();

            try
            {
                throw new System.IO.FileNotFoundException();
            }
            catch (Exception ex)
            {
                log.Debug("Debug error logging", ex);
                log.Info("Info error logging", ex);
                log.Warn("Warn error logging", ex);
                log.Error("Error error logging", ex);
                log.Fatal("Fatal error logging", ex);
            }
        }
    }

    //Designed to show how we can change log levels by class or namespace
    public static class OtherClass
    {
        //Here is the once-per-class call to initialize the log object
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        //Used to demonstrate making log calls from a different namespace
        public static void TestLogger()
        {
            log4net.GlobalContext.Properties["testProperty"] = "This is my test property information";

            log.Debug("Other Class - Debug logging");
            log.Info("Other Class - Info logging");
            log.Warn("Other Class - Warn logging");
            log.Error("Other Class - Error logging");
            log.Fatal("Other Class - Fatal logging");
        }

    }
}