using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{

    class Klient
    {
        private String[] dane = new String[7];

        public Klient()
        {
            for(int x=0;x<6;x++)
            {
                dane[x] = "brak";
            }
        }

        public void wpisz_dane(string i, string n, string m,string u,string nd,string nm,string z)
        {
            dane[0] = i;
            dane[1] = n;
            dane[2] = m;
            dane[3] = u;
            dane[4] = nd;
            dane[5] = nm;
            dane[6] = z;
        }
    }

    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


    }
}