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  1. /*
  2.  MainWindow.xaml
  3. <Window x:Class="PhotoViewer.MainWindow"
  4.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  5.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  6.         Title="MainWindow" Height="211" Width="563">
  7.     <Grid>
  8.         <ListBox x:Name="PhotoListBox" ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Disabled">
  9.             <ListBox.ItemsPanel>
  10.                 <ItemsPanelTemplate>
  11.                     <StackPanel Orientation="Horizontal" Height="{Binding PhotoListBox.Height}" />
  12.                 </ItemsPanelTemplate>
  13.             </ListBox.ItemsPanel>
  14.             <ListBox.ItemTemplate>
  15.                 <DataTemplate>
  16.                     <Grid Margin="20" >
  17.                         <Grid.RowDefinitions>
  18.                             <RowDefinition Height="*"/>
  19.                             <RowDefinition Height="Auto"/>
  20.                         </Grid.RowDefinitions>
  21.                         <Image Source="{Binding FilePath}" HorizontalAlignment="Center" />
  22.                         <TextBlock Grid.Row="1" Text="{Binding Caption}" HorizontalAlignment="Center"/>
  23.                     </Grid>
  24.                 </DataTemplate>
  25.             </ListBox.ItemTemplate>
  26.         </ListBox>
  27.     </Grid>
  28. </Window>
  29. */
  30.  
  31. using System;
  32. using System.Collections.ObjectModel;
  33. using System.IO;
  34. using System.Linq;
  35. using System.Threading.Tasks;
  36. using System.Windows;
  37.  
  38. namespace PhotoViewer
  39. {
  40.     /// <summary>
  41.     /// MainWindow.xaml の相互作用ロジック
  42.     /// </summary>
  43.     public partial class MainWindow : Window
  44.     {
  45.         private ObservableCollection<PhotoInfo> photos = new ObservableCollection<PhotoInfo>();
  46.  
  47.         public MainWindow()
  48.         {
  49.             InitializeComponent();
  50.             this.Loaded += MainWindow_Loaded;
  51.             this.PhotoListBox.ItemsSource = photos;
  52.         }
  53.  
  54.         private static bool IsImageFile(string fileName)
  55.         {
  56.             // 適当
  57.             var ext = Path.GetExtension(fileName).ToLowerInvariant();
  58.             return ext == ".png" || ext == ".jpg";
  59.         }
  60.  
  61.         private void MainWindow_Loaded(object sender, RoutedEventArgs e)
  62.         {
  63.             Task.Factory.StartNew(() =>
  64.             {
  65.                 foreach (var path in Directory.EnumerateFiles(".").Where(IsImageFile))
  66.                 {
  67.                     Dispatcher.BeginInvoke(new Action(() =>
  68.                     {
  69.                         photos.Add(new PhotoInfo
  70.                         {
  71.                             FilePath = Path.GetFullPath(path)
  72.                         });
  73.                     }));
  74.                 }
  75.             });
  76.         }
  77.     }
  78.  
  79.     public class PhotoInfo
  80.     {
  81.         public string FilePath { get; set; }
  82.  
  83.         public string Caption
  84.         {
  85.             get
  86.             {
  87.                 return Path.GetFileName(FilePath);
  88.             }
  89.         }
  90.     }
  91. }
  92.  
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https://ideone.com/zKXvF
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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