Arrays :(

Hi, I have to create an application that will take the names of 4 friends from a text box (one at a time).

How do I make it so the current text gets inserted to the next free space on the array.

Thanks

Q: Create a program in C# that declares an array with 4 elements. The program should then insert the names of             four of your friends into the array, and output all elements to the screen, from index 0 to 3, using afor loop

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace exam_review
{
    public partial class Form1 : Form
    {
        string[] namesString = new string[4];
        

        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            for(int counterInteger = -1;counterInteger = 3;counterInteger++)
            {
                
            }

            foreach (string allString in namesString)
            {
                
            }

        }
    }
}