WPF DataGrid RowDetailsTemplate RowDetailsVisibilityMode="VisibleWhenSelected"
<Grid> <DataGrid ItemsSource="{StaticResource booksData}" EnableColumnVirtualization="True" EnableRowVirtualization="True" RowDetailsVisibilityMode="VisibleWhenSelected"> <DataGrid.RowDetailsTemplate> <DataTemplate> <Viewbox> <Image Source="{Binding ImgUrl}" Width="200" Height="500" HorizontalAlignment="Left" VerticalAlignment="Stretch"/> </Viewbox> </DataTemplate> </DataGrid.RowDetailsTemplate> </DataGrid> </Grid>
//xaml <Window x:Class="WpfApp398.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:local="clr-namespace:WpfApp398" mc:Ignorable="d" WindowState="Maximized" Title="MainWindow" Height="450" Width="800"> <Window.Resources> <local:BooksData x:Key="booksData"/> </Window.Resources> <Grid> <DataGrid ItemsSource="{StaticResource booksData}" EnableColumnVirtualization="True" EnableRowVirtualization="True" RowDetailsVisibilityMode="VisibleWhenSelected"> <DataGrid.RowDetailsTemplate> <DataTemplate> <Viewbox> <Image Source="{Binding ImgUrl}" Width="200" Height="500" HorizontalAlignment="Left" VerticalAlignment="Stretch"/> </Viewbox> </DataTemplate> </DataGrid.RowDetailsTemplate> </DataGrid> </Grid> </Window> //cs using System; using System.Collections.Generic; using System.Collections.ObjectModel; 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; using System.IO; namespace WpfApp398 { /// <summary> /// Interaction logic for MainWindow.xaml /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } } public class BooksData:ObservableCollection<Book> { public BooksData() { var imgsList = Directory.GetFiles(@"../../Images"); if(imgsList!=null && imgsList.Any()) { int imgsCount = imgsList.Count(); for (int i = 1; i <= 1000000; i++) { this.Add(new Book() { Id = i, Name = $"Name_{i}", ISBN = $"ISBN_{i}", ImgUrl = imgsList[i%imgsCount] }); } } } } public class Book { public int Id { get; set; } public string Name { get; set; } public string ISBN { get; set; } public string ImgUrl { get; set; } } }