从自定义 ComboBox 获取文本值

Question

我有一个 ComboBox 定义如下：

<ComboBox Width="200" Height="30" Grid.Column="0" x:Name="ExistingSpeciesComboBox" 
          ItemsSource="{Binding SpeciesColorCollection}" HorizontalAlignment="Left">
    <ComboBox.ItemTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal">
                <Rectangle Fill="{Binding Path=Brush}" Stroke="Black" StrokeThickness="1" Height="15" Width="30"/>
                <w:WTextBlock Text="{Binding Name}" VerticalAlignment="Center" 
                              Foreground="{StaticResource SmallControlForegroundBrush}"/>
            </StackPanel>
        </DataTemplate>
    </ComboBox.ItemTemplate>

SpeciesColorCollection 是 ColorObject 类型的 ObservableCollection

Public Class ColorObject
    Public Property Name As String
    Public Property Brush As Brush
End Class

ComboBox 正确显示集合中的项目，但我的问题是当我尝试从 MultiBinding 中的 ComboBox 获取所选文本时，我收到 ColorObject 而不是名称。如何从 ComboBox 的 WTextBlock 中获取“名称”的值？我用于命令的绑定如下。转换器只返回字符串。

<MultiBinding Converter="{StaticResource mySpeciesSetupConverter}">
    <MultiBinding.Bindings>
        <Binding ElementName="NewSpeciesName" Path="Text" />
        <Binding ElementName="ExistingSpeciesComboBox" Path="Text" />
    </MultiBinding.Bindings>
 </MultiBinding>

Answer 1

<MultiBinding Converter="{StaticResource mySpeciesSetupConverter}">
    <MultiBinding.Bindings>
        <Binding ElementName="NewSpeciesName" Path="Text" />
        <Binding ElementName="ExistingSpeciesComboBox" Path="SelectedItem.Name" />
    </MultiBinding.Bindings>
</MultiBinding>