AddRange method in ArrayList

In this article I will explain the AddRange method of ArrayList.
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Introduction

AddRange method adds the elements of an ICollection to the end of the ArrayList.There are different ways to add one ArrayList to another, but the best way is using AddRange. Internally, AddRange uses the Array.Copy or CopyTo methods, which have better performance than some loops.

Example

namespace ConsoleApplication2

{

    class Program

    {

        static void Main(string[] args)

        {

            //create the first arraylist

            ArrayList arraylist1 = new ArrayList();

            arraylist1.Add(5);

            arraylist1.Add(7);

            //create the second arraylist

            ArrayList arraylist2 = new ArrayList();

            arraylist2.Add("Five");

            arraylist2.Add("Seven");

            //perform AddRange method

            arraylist1.AddRange(arraylist2);

            // Display the values.

            foreach (object i in arraylist1)

            {

                Console.WriteLine(i);

            }

        }

    }

}

 

Output


AddRange.jpg

 

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