//xaml <Window x:Class="WpfApp13.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" WindowState="Maximized" xmlns:local="clr-namespace:WpfApp13" mc:Ignorable="d" Title="MainWindow" Height="450" Width="800"> <Window.DataContext> <local:BookVM/> </Window.DataContext> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <ListBox Grid.Column="0" ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" IsSynchronizedWithCurrentItem="True" DisplayMemberPath="Id" /> <ListBox Grid.Column="1" ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" IsSynchronizedWithCurrentItem="True" DisplayMemberPath="Name" /> <ListBox Grid.Column="2" ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" IsSynchronizedWithCurrentItem="True" > <ListBox.ItemTemplate> <DataTemplate> <Image Source="{Binding DataContext.ImgUrl,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}}}" Width="20" Height="50" /> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </Grid> </Window> //.xaml.cs using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.ComponentModel; 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 WpfApp13 { /// <summary> /// Interaction logic for MainWindow.xaml /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } } public class BookVM : INotifyPropertyChanged { public BookVM() { InitData(); } private void InitData() { var imgsList = new List<string>(Directory.GetFiles(@"../../Images")); if(imgsList!=null && imgsList.Any()) { int imgsCount=imgsList.Count; BooksCollection = new ObservableCollection<Book>(); for(int i=0;i<10000;i++) { BooksCollection.Add(new Book() { Id=i+1, Name=$"Name_{i+1}", ImgUrl = $"{imgsList[i%imgsCount]}" }); } } } public event PropertyChangedEventHandler PropertyChanged; private void OnPropertyChanged(string propName) { var handler = PropertyChanged; if(handler!=null) { handler?.Invoke(this, new PropertyChangedEventArgs(propName)); } } private ObservableCollection<Book> booksCollection; public ObservableCollection<Book> BooksCollection { get { return booksCollection; } set { if(value!=booksCollection) { booksCollection = value; OnPropertyChanged(nameof(BooksCollection)); } } } } public class Book { public int Id { get; set; } public string Name { get; set; } public string ImgUrl { get; set; } } }
标签:get,Windows,imgsList,System,IsSynchronizedWithCurrentItem,using,WPF,True,public From: https://www.cnblogs.com/Fred1987/p/18448437