STUDENTE

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;
using System.IO;

namespace studenti
{
    public partial class Form1 : Form
    {
        Class1 st = new Class1();
        int punt;
        int pos;
        float medd,tott;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int.TryParse(comboBox1.Text, out pos);
            if (pos<1 || pos>10)
            {
                return;
            }
            textBox3.Text = st.punteggio[pos].ToString();

            if (textBox3.Text == "0")
            {
                textBox3.Text = "";
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            punt =Convert.ToInt32(textBox3.Text);
            textBox3.Text = "";
            st.Aggiungi(punt, pos);
        }
        private void button2_Click(object sender, EventArgs e)
        {
            medd=st.Media();
            label7.Text = "Media: " + medd.ToString();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            tott = st.Totale();
            label6.Text = "Totale: " + tott.ToString();
        }

        private void textBox3_TextChanged(object sender, EventArgs e)
        {

        }

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void button4_Click(object sender, EventArgs e)
        {
            comboBox2.Items.Add(textBox1.Text);
            comboBox2.Items.Add(textBox2.Text);
            for (int i=0; i<=10;i++){
                comboBox2.Items.Add("Questionario " + i + ":" + st.punteggio[i].ToString());
            }

            StreamWriter pagella = new StreamWriter("pagella.txt");
            for (int i = 0; i < comboBox2.Items.Count; i++)
            {
                pagella.WriteLine(comboBox2.Items[i].ToString());
            }
            pagella.Close();
            comboBox2.Items.Clear();
        }


    }
}


CLASSE--------------------------------------------------------------------

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace studenti
{
    class Class1
    {
        private string nome;
        private string cognome;
        private float tot;
        private float med;
        public int[] punteggio = new int[11];
        private int count = 0;

        public string Nome
        {
            set { nome = value; }
            get { return nome; }
        }
        public string Cognome
        {
            set { cognome = value; }
            get { return cognome; }
        }
        public float Tot
        {
            set { tot = value; }
            get { return tot; }
        }
        public float Med
        {
            set { med = value;}
            get { return med; }
        }
        public Class1()
        {
            nome = "";
            cognome = "";

        }

        public void Aggiungi(int punteggio1, int po)
        {
            punteggio[po] = punteggio1;
        }
        public float Media()
        {
            count = 0;
            tot = 0;
            for (int i = 0; i < 10; i++)
            {
                if (punteggio[i] > 0)
                {
                    tot += punteggio[i];
                    count++;
                }
            }
            med = tot / count;
            return med;
        }
        public float Totale()
        {
            tot = 0;
            for (int i = 0; i < 10; i++)
            {
                if (punteggio[i] > 0)
                {
                    tot += punteggio[i];
                }
            }
            return tot;
        }
    }
}