using System;

using System.Collections;

public class CsharpArrayListProgram

{

    public static void Main()

    {

        ArrayList arrayList = new ArrayList();  

         // add elements in ArrayList

        arrayList.Add("C#");

        arrayList.Add("ASP.Net");         

        arrayList.Add("SQL");

        //print initial arrayList 

        Console.WriteLine("Initial ArrayList:");

        ShowArrayList(arrayList);

        //remove element from arrayList

        arrayList.RemoveAt(1); //remove element using Index

        //print arrayList after deletion

        Console.WriteLine("ArrayList After deletion:");

        ShowArrayList(arrayList);

        //Gets the number of elements actually contained in the ArrayList.

        Console.WriteLine("Item count of arrayList: "+ arrayList.Count);

        //Check if Element exists using .Contains

        Console.WriteLine("Item 'C#' Exists in ArrayiList: "+ arrayList.Contains("C#"));

    }

    //print ArrayList item using foreach

    public static void ShowArrayList(ArrayList list)

    {

        foreach(var item in list)

        {

            Console.WriteLine(item);

        }

    }

}