绑定两个控件的属性

转自CSDNhttp://msdn.microsoft.com/zh-cn/library/ms742167(v=vs.90).aspx

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Width="460" Height="200"
  Title="Binding the Properties of Two Controls">

    <Window.Resources>
        <Style TargetType="TextBlock">
            <Setter Property="FontSize" Value="16"/>
            <Setter Property="FontWeight" Value="Bold"/>
            <Setter Property="DockPanel.Dock" Value="Top"/>
            <Setter Property="HorizontalAlignment" Value="Center"/>
        </Style>
        <Style TargetType="Canvas">
            <Setter Property="Height" Value="50"/>
            <Setter Property="Width" Value="50"/>
            <Setter Property="Margin" Value="8"/>
            <Setter Property="DockPanel.Dock" Value="Top"/>
        </Style>
        <Style TargetType="ComboBox">
            <Setter Property="Width" Value="150"/>
            <Setter Property="Margin" Value="8"/>
            <Setter Property="DockPanel.Dock" Value="Top"/>
        </Style>
    </Window.Resources>

    <Border Margin="10" BorderBrush="Silver" BorderThickness="3" Padding="8">
        <DockPanel>
            <TextBlock>Choose a Color:</TextBlock>
            <ComboBox Name="myComboBox" SelectedIndex="0">
                <ComboBoxItem>Green</ComboBoxItem>
                <ComboBoxItem>Blue</ComboBoxItem>
                <ComboBoxItem>Red</ComboBoxItem>
            </ComboBox>
            <Canvas>
                <Canvas.Background>
                    <Binding ElementName="myComboBox" Path="SelectedItem.Content"/>
                </Canvas.Background>
            </Canvas>
        </DockPanel>
    </Border>

</Window>

关键： <Binding ElementName="myComboBox" Path="SelectedItem.Content"/>