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

namespace DeLunaFabio_es01Vettori
{
    public partial class Form1 : Form
    {
        const int N = 5;
        int[] vet = new int[N];
        int i = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void btnInserisci_Click(object sender, EventArgs e)
        {
            vet[i] = Convert.ToInt32(txtEta.Text);
            i++;
            txtEta.Text = "";
            txtEta.Focus();
            if (i == N)
            {
                MessageBox.Show("Hai raggiunto il numero degli elementi necessari");
                btnVisualizza.Enabled = true;
                lstEta.Visible = true;
            }
        }

        private void btnCalcola_Click(object sender, EventArgs e)
        {
            for (i = 0; i < N; i++)
            {
                lstEta.Items.Add(vet[i]);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            btnVisualizza.Enabled = false;
            lstEta.Visible= false;
        }
    }
}