using System;

using System.Collections;

public class Program

{

    public static void Main()

    {

        var students = new ArrayList();

        students.Add(new Student() { FirstName = "John", LastName = "Doe" });

        students.Add(new Student() { FirstName = "Richard", LastName = "Roe" });

        foreach(Student s in students)

        {

            Console.WriteLine(s.FirstName);

        }

    }

}

​

public class Student

{

    public string FirstName {get;set;}

    public string LastName {get;set;}   

}