OOP

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 WindowsFormsApp48
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnKnap_Click(object sender, EventArgs e)
        {
            BankKunde kunde1 = new BankKunde();

            kunde1.navn = "Frank";
            kunde1.saldo = 50;

            BankKunde kunde2 = new BankKunde();
            kunde2.saldo = 100;
            kunde2.navn = "Pia";
        }
    }

    public class BankKunde
    {
        public string navn;
        public int saldo;
    }
}