Question

My class is:

public class Person
{
    private string _firstname;
    private string _lastname;
    private DateTime _birthdate;

    public Person(string firstname, string lastname, DateTime birthdate)
    {
        _firstname = firstname;
        _lastname = lastname;
        _birthdate = birthdate;
    }

    public string Firstname
    { get { return _firstname; } }

    public string Lastname
    { get { return _lastname; } }

    public DateTime Birthdate
    { get { return _birthdate; } }

Here is my method I am accessing in order to get everyone’s age:

public int getAge()
{
    TimeSpan ts =DateTime.Now - _birthdate;
    int year = (int)ts.TotalDays / 365;
    return year;
}

My form:

namespace May22_StructClassObj_HW
{
    public partial class Form1 : Form
    {
        DateTime[] birth = new DateTime[20];
        Person[] People = new Person[20];

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // Create a class Person with the following fields _firstname, _lastname, _birthDate(DateTime Type) Add constructor, properties (get only) and a method GetAge that returns the age (int) of a person. 
            // In Form1, Create an array of Person objects to hold 20 people
            // In Form1_Load: Populate the array with 20 Person objects

            // Add Gui to display all the people in the list (first and last names, birthdate, and age
            // Add Gui 
            //people[0] = new Person("John","Stockton", DateTime.)

            string[] first = new string[20] { "Scott", "Ramona", "Todd", "Melissa", "Naomi", "Leland", "Conor", "Julie", "Armondo", "Leah", "Frank", "Peter", "Ila", "Mandy", "Sammy", "Gareth", "Garth", "Wayne", "Freddy", "Mark" };

            string[] last = new string[20] { "Kennedy", "Kennedy", "Kennedy", "Kennedy", "Kennedy", "Kennedy", "Carrel", "MaloyTheBeautiful", "Johnson", "Smith", "Sinatra", "Clemens", "Eels", "Johnson", "Eels", "Thompson", "Brooks", "World", "Crugar", "Thomas" };

            birth[0] = new DateTime(1987, 2, 7);
            birth[1] = new DateTime(1962, 5, 9);
            birth[2] = new DateTime(1984, 1, 4);
            birth[3] = new DateTime(1977, 4, 1);
            birth[4] = new DateTime(1983, 2, 8);
            birth[5] = new DateTime(1979, 4, 1);
            birth[6] = new DateTime(1965, 9, 9);
            birth[7] = new DateTime(1968, 1, 2);
            birth[8] = new DateTime(1980, 2, 7);
            birth[9] = new DateTime(1982, 2, 7);
            birth[10] = new DateTime(1984, 12, 4);
            birth[11] = new DateTime(1968, 11, 9);
            birth[12] = new DateTime(1968, 2, 8);
            birth[13] = new DateTime(1975, 5, 2);
            birth[14] = new DateTime(1945, 5, 3);
            birth[15] = new DateTime(1969, 4, 6);
            birth[16] = new DateTime(1987, 1, 4);
            birth[17] = new DateTime(1976, 3, 5);
            birth[18] = new DateTime(1989, 8, 6);
            birth[19] = new DateTime(1988, 2, 9);

            // Populate Array Person[] People = new Person[20];   
            for (int i = 0; i < People.Length; i++)
            {
                People[i] = new Person(first[i], last[i], birth[i]);
            }

        }

        private void btnDisAll_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < People.Length; i++)
            {
                richTxtDisplay.AppendText("Name: " + People[i].Firstname + "\t" + People[i].Lastname + "\t" + " BirthDate: " + People[i].Birthdate + "\n\n");
                //richTxtDisplay.AppendText(People[i].ToString());
                //richTxtDisplay.AppendText(People[i].Firstname + People[i].Lastname + People[i].Birthdate + "\n");
            }
        }
    }

Problem here:

Here is my button that I am using to call the method and have it give me the age of everyone in my Person array. But I know this is wrong. So someone please guide me through it.

private void btnGetAge_Click(object sender, EventArgs e)
{
    for (int i = 0; i < People.Length; i++)
    {
        Person Per = 
            new Person(People[i].Firstname, People[i].Lastname, People[i].Birthdate);
        Per.getAge();
    }
}

I have listed where my problem is. Basically all I want to do is call the method and display all the ages of everyone in my Person array. There are twenty people and I want to show their age. I do believe my code is perfect to get the age in my method in my class but I’m unsure whether I created a new instance right in order to use the method.

Answer 1

for (int i = 0; i < Person.Length; i++)
{
   Person[i].getAge();
}