C# process open img

if(System.IO.File.Exists(imgPath))
{
    System.Diagnostics.Process.Start(imgPath);  
}

//xaml
<Window x:Class="WpfApp261.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:behavior="http://schemas.microsoft.com/xaml/behaviors"
        xmlns:local="clr-namespace:WpfApp261"
        mc:Ignorable="d" WindowState="Maximized"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <DataGrid x:Name="dg" ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                  VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.CacheLength="100" 
                  CanUserAddRows="False" AutoGenerateColumns="False"
                  VirtualizingPanel.CacheLengthUnit="Item"
                  VirtualizingPanel.ScrollUnit="Item"                  
                  VirtualizingPanel.VirtualizationMode="Recycling">
            <behavior:Interaction.Triggers>
                <behavior:EventTrigger EventName="MouseDoubleClick">
                    <behavior:CallMethodAction MethodName="dg_MouseDoubleClick" TargetObject="{Binding}"/>
                </behavior:EventTrigger>
            </behavior:Interaction.Triggers>
            <DataGrid.Columns>
                <DataGridCheckBoxColumn Header="Select" Binding="{Binding IsSelected}"/>
                <DataGridTextColumn Header="Id" Binding="{Binding Id}"/>
                <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
                <DataGridTemplateColumn Header="Image">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Image Source="{Binding ImgUrl}" Width="200" Height="500" RenderOptions.BitmapScalingMode="LowQuality"/>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>


//cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Globalization;
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 WpfApp261
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            var vm = new MainVM();
            this.DataContext = vm;
        } 
    }

    public class MainVM : INotifyPropertyChanged
    {
        public MainVM()
        {
            InitData();
        }

        private void InitData()
        {
            BooksCollection = new ObservableCollection<Book>();
            var imgsList = System.IO.Directory.GetFiles(@"../../Images");
            int imgsCount = imgsList.Count();
            for(int i=0;i<1000000;i++)
            {
                BooksCollection.Add(new Book()
                {
                    Id = i,
                    Name = $"Name_{i + 1}",
                    ImgUrl = imgsList[i % imgsCount]
                });
            }
        }

        private ObservableCollection<Book> booksCollection;
        public ObservableCollection<Book> BooksCollection
        {
            get
            {
                return booksCollection;
            }
            set
            {
                booksCollection = value;
                OnPropertyChanged(nameof(BooksCollection));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged(string propName)
        {
            var handler = PropertyChanged;
            if(handler!=null)
            {
                handler?.Invoke(this, new PropertyChangedEventArgs(propName));
            }
        }


        public void dg_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            var dg = sender as DataGrid;
            if(dg!=null)
            {
                var bk = dg?.SelectedItem as Book;
                if(bk!=null)
                {
                    string imgPath = bk.ImgUrl;
                    if(System.IO.File.Exists(imgPath))
                    {
                        System.Diagnostics.Process.Start(imgPath);  
                    }
                }
            }
        }
    }


    public class Book
    {
        public bool IsSelected { get; set; }
        public int Id { get; set; }
        public string Name { get; set;}
        public string ImgUrl { get; set; }
    }
}