IsSynchronizedWithCurrentItem

 <UserControl.Resources>        <utils:StringArrayConverter x:Key="stringArrayConverter" />        <utils:BookTemplateSelector x:Key="bookTemplateSelector" />        <ObjectDataProvider x:Key="books" ObjectType="local:BookFactory" MethodName="GetBooks" />                <DataTemplate x:Key="wroxTemplate" DataType="{x:Type local:Book}">            <Border Background="Red" Margin="10" Padding="10">                <StackPanel>                    <Label Content="{Binding Title}" />                    <Label Content="{Binding Publisher}" />                </StackPanel>            </Border>        </DataTemplate>        <DataTemplate x:Key="dummiesTemplate" DataType="{x:Type local:Book}">            <Border Background="Yellow" Margin="10" Padding="10">                <StackPanel>                    <Label Content="{Binding Title}" />                    <Label Content="{Binding Publisher}" />                </StackPanel>            </Border>        </DataTemplate>        <DataTemplate x:Key="bookTemplate" DataType="{x:Type local:Book}">            <Border Background="LightBlue" Margin="10" Padding="10">                <StackPanel>                    <Label Content="{Binding Title}" />                    <Label Content="{Binding Publisher}" />                </StackPanel>            </Border>        </DataTemplate>    </UserControl.Resources>    <DockPanel DataContext="{StaticResource books}">        <StackPanel Orientation="Horizontal" DockPanel.Dock="Bottom" HorizontalAlignment="Center">            <Button Margin="5" Padding="4" Content="Add Book" Click="OnAddBook" />        </StackPanel>        <ListBox DockPanel.Dock="Left" ItemsSource="{Binding}" Margin="5" MinWidth="120" IsSynchronizedWithCurrentItem="True" ItemTemplateSelector="{StaticResource bookTemplateSelector}">        </ListBox>        <Grid>            <Grid.RowDefinitions>                <RowDefinition />                <RowDefinition />                <RowDefinition />                <RowDefinition />            </Grid.RowDefinitions>            <Grid.ColumnDefinitions>                <ColumnDefinition Width="Auto" />                <ColumnDefinition Width="*" />            </Grid.ColumnDefinitions>            <Label Content="Title" Grid.Row="0" Grid.Column="0" Margin="10,0,5,0" HorizontalAlignment="Left" VerticalAlignment="Center" />            <Label Content="Publisher" Grid.Row="1" Grid.Column="0" Margin="10,0,5,0" HorizontalAlignment="Left" VerticalAlignment="Center" />            <Label Content="Isbn" Grid.Row="2" Grid.Column="0" Margin="10,0,5,0" HorizontalAlignment="Left" VerticalAlignment="Center" />            <Label Content="Authors" Grid.Row="3" Grid.Column="0" Margin="10,0,5,0" HorizontalAlignment="Left" VerticalAlignment="Center" />            <TextBox Text="{Binding Title}"  Grid.Row="0" Grid.Column="1" Margin="5" />            <TextBox Text="{Binding Publisher}" Grid.Row="1" Grid.Column="1" Margin="5" />            <TextBox Text="{Binding Isbn}" Grid.Row="2" Grid.Column="1" Margin="5" />            <TextBlock Text="{Binding Authors, Converter={StaticResource stringArrayConverter}, ConverterParameter=', '}"  Grid.Row="3" Grid.Column="1" Margin="5" VerticalAlignment="Center" TextWrapping="Wrap" />        </Grid>    </DockPanel>

BookFactory类

public class BookFactory    {        private ObservableCollection<Book> books = new ObservableCollection<Book>();        public BookFactory()        {            books.Add(new Book("Professional C# 4 with .NET 4", "Wrox Press", "978-0-470-50225-9", "Christian Nagel", "Bill Evjen", "Jay Glynn", "Karli Watson", "Morgan Skinner"));            books.Add(new Book("Professional C# 2008", "Wrox Press", "978–0-470-19137-8", "Christian Nagel", "Bill Evjen", "Jay Glynn", "Karli Watson", "Morgan Skinner"));            books.Add(new Book("Beginning Visual C# 2010", "Wrox Press", "978-0-470-50226-6", "Karli Watson", "Christian Nagel", "Jacob Hammer Pedersen", "Jon D. Reid", "Morgan Skinner", "Eric White"));            books.Add(new Book("Windows 7 Secrets", "Wiley", "978-0-470-50841-1", "Paul Thurrott", "Rafael Rivera"));            books.Add(new Book("C# 2008 for Dummies", "For Dummies", "978-0-470-19109-5", "Stephen Randy Davis", "Chuck Sphar"));        }        public Book GetTheBook()        {            return books[0];        }        public void AddBook(Book book)        {            books.Add(book);        }        public IEnumerable<Book> GetBooks()        {            return books;        }    }

Book类

  public class Book : INotifyPropertyChanged    {        public Book(string title, string publisher, string isbn, params string[] authors)        {            this.title = title;            this.publisher = publisher;            this.isbn = isbn;            this.authors.AddRange(authors);        }        public Book()            : this("unknown", "unknown", "unknown")        {        }        public event PropertyChangedEventHandler PropertyChanged;        private string title;        public string Title {            get            {                return title;            }            set            {                title = value;                if (PropertyChanged != null)                    PropertyChanged(this, new PropertyChangedEventArgs("Title"));            }        }        private string publisher;        public string Publisher         {            get            {                return publisher;            }            set            {                publisher = value;                if (PropertyChanged != null)                    PropertyChanged(this, new PropertyChangedEventArgs("Publisher"));            }        }        private string isbn;        public string Isbn {            get            {                return isbn;            }            set            {                isbn = value;                if (PropertyChanged != null)                    PropertyChanged(this, new PropertyChangedEventArgs("Isbn"));            }        }        private readonly List<string> authors = new List<string>();        public string[] Authors        {            get            {                return authors.ToArray();            }        }        public override string ToString()        {            return this.title;        }    }

在XAML中以下Text Binding的内容是DockPanel中的DataContext，因为DataContext是Book的一个集合，所以默认是Binding到第一个Book上，当ListBox设置了IsSynchronizedWithCurrentItem时，会改变DataContext的CurrentItem(即数据源当前选择的Item)，所以当ListBox改变选择项的时候，TextBox和TextBlock的Text内容也会产生相应的变化。

  <DockPanel DataContext="{StaticResource books}">

 <TextBox Text="{Binding Title}"  Grid.Row="0" Grid.Column="1" Margin="5" />            <TextBox Text="{Binding Publisher}" Grid.Row="1" Grid.Column="1" Margin="5" />            <TextBox Text="{Binding Isbn}" Grid.Row="2" Grid.Column="1" Margin="5" />            <TextBlock Text="{Binding Authors, Converter={StaticResource stringArrayConverter}, ConverterParameter=', '}"  Grid.Row="3" Grid.Column="1" Margin="5" VerticalAlignment="Center" TextWrapping="Wrap" />