Form2 cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using System.Threading.Tasks;
using Windows.ApplicationModel.Core;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Core;
using Windows.UI.ViewManagement;
using Windows.UI.WindowManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Hosting;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using Windows.UI.Xaml.Navigation;


//Szablon elementu Pusta strona jest udokumentowany na stronie https://go.microsoft.com/fwlink/?LinkId=234238

namespace Nazwiska
{
    /// <summary>
    /// Pusta strona, która może być używana samodzielnie lub do której można nawigować wewnątrz ramki.
    /// </summary>
    public sealed partial class Form2 : Page
    {

        public Form2()
        {
            this.InitializeComponent();
        }

        Osoba osoba;
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            osoba = (Osoba)e.Parameter;
            base.OnNavigatedTo(e);
            ImieTxt.Text = osoba.Imie;
            NazwiskoTxt.Text = osoba.Nazwisko;
            AdresTxt.Text = osoba.Adres;
            Obrazek.Source = new BitmapImage(new Uri(osoba.Image));
        }


        private void dodajButton_Click(object sender, RoutedEventArgs e)
        {

        }

        private void edytujButton_Click(object sender, RoutedEventArgs e)
        {
            osoba.Imie = ImieTxt.Text;
            osoba.Nazwisko = NazwiskoTxt.Text;
            osoba.Adres = AdresTxt.Text;
        }
        private void powrocButton_Click(object sender, RoutedEventArgs e)
        {

        }
    }
}