using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
public string FirstName { get; set; }
public string LastName { get; set; }
public DateTime DateOfBirth { get; set; }
public Person(string f, string l) {
public int StudentId { get; set; }
public DateTime EnrollmentDate { get; set; }
public DateTime? GraduationDate { get; set; }
public Student (string firstname, string lastname) {
var Auri = new Student("Auri", "Rahimzadeh");
var Scott = new Student("Scott", "Jones");
var people = new List<Person>();