КИ Лаб4 C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace lab4
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            List<NBATeam> timovi = Data.GetTeams();
            lstTeams.ItemsSource = timovi;
            lstTeams.SelectedIndex = 0;
        }

        private void lstTeams_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            filterPlayers();
        }

        private void filterPlayers() {
            NBATeam tim = (NBATeam) lstTeams.SelectedItem;
            List<String> igraci = new List<string>();
            if (tim != null)
            {
                foreach (NBAPlayer igrac in tim.Players)
                {
                    if (Rd1.IsChecked == true)
                    {
                        igraci.Add(igrac.Name + " - " + igrac.PointsPerGame);
                    }
                    else
                    {
                        igraci.Add(igrac.Name + " - " + igrac.MinutesPlayed);
                    }
                }
                lstPlayers.ItemsSource = igraci;
                lstPlayers.Background = tim.TeamColor;

            }
        }

        private void Rd2_Checked(object sender, RoutedEventArgs e)
        {
            filterPlayers();
        }

        private void Rd1_Checked(object sender, RoutedEventArgs e)
        {
            filterPlayers();
        }
    }

    public class ImageConverter : IValueConverter {

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string imgPath = System.IO.Path.Combine(System.IO.Directory.GetCurrentDirectory(), (String)value);
            return new BitmapImage(new Uri(imgPath));
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}