Silverlight: TextBox ComboBox数据绑定

说明：
本例子中的TextBox和ComboBox绑定的是一个数据集合, ObservableCollectioin来自命名空间System.Collections.ObjectModel。
VB：Public MyBooks As New ObservableCollection(Of Book)()
C#: Public ObservableCollection <Book> MyBooks=New ObservableCollection<Book>();
待绑定的数据<TextBox x:Name="txtbox1" Text="{Binding Mode=OneWay}"/>

MainPage.xaml:

<UserControl x:Class="singleitem.MainPage"
    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"
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
  <Grid x:Name="LayoutRoot" Loaded="LayoutRoot_Loaded" ShowGridLines="True">
        <Grid.RowDefinitions >
            <RowDefinition Height="40"></RowDefinition>
            <RowDefinition Height="140"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
            <RowDefinition Height="40"></RowDefinition>
            <RowDefinition Height="140"></RowDefinition>
            <RowDefinition ></RowDefinition>
        </Grid.RowDefinitions>
        <!--textbox1 Binding a control to a single Item-->
        <TextBox x:Name="textbox1" Grid.Row="1" Text="{Binding Mode=OneWay}"></TextBox>
        <!--combobox1 Binding a control to a collection of Objects-->
        <ComboBox x:Name="combobox1" Grid.Row="2" Height="40" Width="300" ItemsSource="{Binding Mode=OneWay}" HorizontalAlignment="left"></ComboBox>
        <!--combobox2 display items in a control by using a Data Template-->
        <ComboBox x:Name="combobox2" Grid.Row="3" Height="40" Width="300" ItemsSource="{Binding Mode=OneWay}" HorizontalAlignment="left">
            <ComboBox.ItemTemplate >
                <DataTemplate >
                    <StackPanel Orientation="Horizontal" Margin="2">
                        <TextBlock Text="Author:" Margin="2"/>
                        <TextBlock Text="{Binding AuthorName}" Margin="2"/>
                        <TextBlock Text="Book:" Margin="10,2,0,2"/>
                        <TextBlock Text="{Binding BookName}" Margin="2"/>
                    </StackPanel>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
        <!--combobox3 adding a details view for selected item in combobox-->
        <ComboBox x:Name="combobox3" Grid.Row="4" Height="40" Width="300" ItemsSource="{Binding Mode=OneWay}" HorizontalAlignment="left" SelectionChanged="combobox3_SelectionChanged" VerticalAlignment="Top">
            <ComboBox.ItemTemplate >
                <DataTemplate >
                    <StackPanel Orientation="Horizontal" Margin="2" >
                        <TextBlock Text="Author:" Margin="2" />
                        <TextBlock Text="{Binding AuthorName}" Margin="2"/>
                        <TextBlock Text="Book:" Margin="10,2,0,2"/>
                        <TextBlock Text="{Binding BookName}" Margin="2"/>
                    </StackPanel>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
        <StackPanel Grid.Row="4" x:Name="DetailPanel" VerticalAlignment="Bottom">
            <!--AuthorName is the property Name in the Book Class-->
            <!--BookName is the property Name in the Book Class-->
            <!--ReleaseTime is the property Name in the Book Class-->
            <TextBlock Text="{Binding AuthorName, Mode=OneWay}"/>
            <TextBlock Text="{Binding BookName, Mode=OneWay}"/>
            <TextBlock Text="{Binding ReleaseTime, Mode=OneWay}"/>
        </StackPanel>
    </Grid>
</UserControl>

MainPage.xaml.vb:

Imports System.Collections.ObjectModel

Partial Public Class MainPage
    Inherits UserControl
    'ObservableCollection defined in System.Collection.ObjectModel
    Public MyBooks As New ObservableCollection(Of Book)()
    Public Sub New()
        InitializeComponent()
    End Sub

    Private Sub LayoutRoot_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
        textbox1.DataContext = New Book("Cooper", "Simple Life", System.DateTime.Now)
        MyBooks.Add(New Book("Cooper", "Cooper Notes", New DateTime(2007, 2, 17)))
        MyBooks.Add(New Book("Cooper", "Graduation", New DateTime(2008, 2, 17)))
        MyBooks.Add(New Book("Sweety", "Sweety's Diary", New DateTime(2009, 2, 17)))

        combobox1.DataContext = MyBooks

        combobox2.DataContext = MyBooks

        combobox3.DataContext = MyBooks

    End Sub

    Private Sub combobox3_SelectionChanged(ByVal sender As System.Object, ByVal e As System.Windows.Controls.SelectionChangedEventArgs)
        Dim mys As ComboBox = TryCast(sender, ComboBox)
        DetailPanel.DataContext = MyBooks(mys.SelectedIndex)
    End Sub
End Class
''' <summary>
''' Book Class as Object
''' </summary>
''' <remarks></remarks>
Public Class Book

    Public Sub New()
    End Sub

    Public Sub New(ByVal author As String, ByVal book As String, ByVal release As DateTime)
        AuthorName = author
        BookName = book
        ReleaseTime = release
    End Sub

    Private _authorName As String
    Public Property AuthorName() As String
        Get
            Return _authorName
        End Get
        Set(ByVal value As String)
            _authorName = value
        End Set
    End Property

    Private _bookName As String
    Public Property BookName() As String
        Get
            Return _bookName
        End Get
        Set(ByVal value As String)
            _bookName = value
        End Set
    End Property

    Private _releaseTime As DateTime
    Public Property ReleaseTime() As DateTime
        Get
            Return _releaseTime
        End Get
        Set(ByVal value As DateTime)
            _releaseTime = value
        End Set
    End Property

    Public Overrides Function ToString() As String
        Return BookName + " by " + AuthorName + ", Published: " + ReleaseTime.ToShortDateString()
    End Function
End Class