using System;
    using System.Collections.ObjectModel;
    using System.ComponentModel;
    using System.Globalization;
    using System.Windows;
    using System.Windows.Data;
    using System.Windows.Media.Imaging;
    
    namespace DataGridArrowSlectionChanged
    {
      public partial class MainWindow : Window
      {
        public MainWindow()
        {
          InitializeComponent();
          DataContext=new ViewModel();
        }
      }
      public class Item
      {
        public int Id { get;set;}
        public string Name { get;set;}
      }
      public class ViewModel : INotifyPropertyChanged
      {
        public ViewModel()
        {
          items.Add(new Item() { Id= 1, Name = "images.jpg" });
          items.Add(new Item() { Id = 2, Name = "spring1.jpg" });
          items.Add(new Item() { Id = 3, Name = "delete.jpg" });
        }
        private ObservableCollection<Item> items = new ObservableCollection<Item>();
    
        public ObservableCollection<Item> Items
        {
          get { return items; }
          set { items = value;  }
        }
        private Item selectedItem;
        public Item SelectedItem
        {
          get { return selectedItem; }
          set
          {
            if (value != selectedItem)
            {
              selectedItem = value;
              OnPropertyChanged("SelectedItem");
            }
          }
        }
        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(string name)
        {
          var handler = System.Threading.Interlocked.CompareExchange(ref PropertyChanged, null, null);
          if (handler != null)
          {
            handler(this, new PropertyChangedEventArgs(name));
          }
        }
      }
      public class StringToImageConverter : IValueConverter
      {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
          if (value.GetType() != typeof(string))
          {
            throw new InvalidOperationException("The value must be a string");
          }
          return new BitmapImage(new Uri((string)value));
        }
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
          return null;
        }
      }
    }