How To Create JavaScript Function

How To Create JavaScript Function 

Use Keyword "function" to create function with parameter or parameter less.

see the example as below.

e.g.:- 1 - Parameter Less Function

function sum(){

let a =5;

let b=10;

let c=a+b;

console.log(c);

}

e.g.:- 2 - Parameter Function

function sum(a,b){

let c=a+b;

console.log(c);

}

e.g :- 3 - Function As Expression

var sum = function(a,b){

let c= a+b;

return c;

}

let  output =sum(5,10);

console.log(output );

e.g :- 4 - Arrow Function

let sum = (a,b) => a+b;

let  output =sum(5,10);

console.log(output);

Logging using log4net

Logging using log4net

Step : 1 

Create Demo application like console application.

Step : 2

Add log4Net library from nuget manager.

Step : 3

Add config file for log4net

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <configSections>

    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />

  </configSections>

  <log4net>

    <appender name="LogFileAppender"

                    type="log4net.Appender.RollingFileAppender" >

      <param name="File" value="E:\Test Application\Log\log.txt" />

      <param name="AppendToFile" value="true" />

      <rollingStyle value="Size" />

      <maxSizeRollBackups value="2" />

      <maximumFileSize value="10MB" />

      <staticLogFileName value="true" />

      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />

      <layout type="log4net.Layout.PatternLayout">

        <param name="ConversionPattern"

             value="%-5p%d{yyyy-MM-dd hh:mm:ss} – %m%n" />

        <conversionPattern

             value="%newline%newline%date %newline%logger 

                       [%property{NDC}] %newline>> %message%newline" />

      </layout>

    </appender>

    <root>

      <level value="ALL" />

      <appender-ref ref="LogFileAppender" />

    </root>

  </log4net>

</configuration>  

Step : 5

Add one class for logging method

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace LoggingTest

{

    public static class Logger

    {

        private static log4net.ILog Log { get; set; }

        static Logger()

        {

            Log = log4net.LogManager.GetLogger(typeof(Logger));

        }

        public static void Error(object msg)

        {

            Log.Error(msg);

        }

        public static void Error(object msg, Exception ex)

        {

            Log.Error(msg, ex);

        }

        public static void Error(Exception ex)

        {

            Log.Error(ex.Message, ex);

        }

        public static void Info(object msg)

        {

            Log.Info(msg);

        }

    }

}

Step : 6

Register config file into application assembly (Properties >> AssemblyInfo.cs).

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

Step : 7

Use logger method as like uses.

class Program

    {

        static void Main(string[] args)

        {

           

            try

            {

                throw new Exception("Test Logging  by dot net by vickypedia");

            }

            catch (Exception ex)

            {

                Logger.Error(ex);

            }

            Console.WriteLine("Test Logging  by dot net by vickypedia");

            Console.ReadKey();

        }

    }

Step :8 

See the log file as mention into config "E:\Test Application\Log\log.txt"