Posted by : Anwar Hossain
Category : c # basic tutorial

How to join two ArrayList collections in C#.

Dear viewer's I will show how to join two ArrayList collections in C#.For Joining two ArrayList collections we can use AddRange method of ArrayList class .Firstly I have created two two ArrayList collections that means same type data then using AddRange method I have combined with each other.

Join Two ArrayList collections

Join Two ArrayList collections

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Collections;


namespace Csharp_JoinArrayList


    class Program


        static void Main(string[] args)



            ArrayList CountryList1 = new ArrayList();

            ArrayList CountryList2 = new ArrayList();


















            Console.WriteLine("Using AddRange Method");






            foreach (object i in CountryList1)


                Console.WriteLine("\n {0}", i);











Out Put


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