我有一个具有differents属性的ComboBox样式，我有一个Validation.errortemplate，它以红色显示边框和文本块以在屏幕上显示错误。

我想将前景的文本块绑定到我的comboBox的Background属性。

我尝试了不同的方法，但是没有成功...

这是我的代码的一部分：

 <Style x:Name="comboBoxSB" x:Key="ComboBoxStyle" TargetType="{x:Type ComboBox}">
        <Setter Property="Background" Value="{Binding Background,Converter={StaticResource BackgroundToBrushConverter}}"/>
        <Setter Property="FontFamily" Value="{Binding Font,Converter={StaticResource ScreenBoxFontToFontFamilyConverter}}"/>
        <Setter Property="FontSize" Value="{Binding TailleDuTexte}"/>
        <Setter Property="Foreground" Value="{Binding Foreground,Converter={StaticResource BackgroundToBrushConverter}}"/>
        <Setter Property="FontWeight" Value="{Binding EstGras,Converter={StaticResource ResourceKey=BooleanToFontWeightConverter}}"/>
        <Setter Property="Width" Value="{Binding Largeur,Converter={StaticResource NullReferenceConverter}}"/>
        <Setter Property="Height" Value="{Binding Hauteur,Converter={StaticResource NullReferenceConverter}}"/>
        <Setter Property="FontStyle" Value="{Binding EstItalic,Converter={StaticResource ResourceKey=BoolToItalicFontStyle}}"/>
        <Setter Property="HorizontalAlignment" Value="{Binding HorizontaleAlignement,Converter={StaticResource HorizontalAlignmentConverter}}"/>
        <Setter Property="VerticalAlignment" Value="{Binding VerticaleAlignement,Converter={StaticResource VerticalAlignmentConverter}}"/>
        <Setter Property="Margin" Value="{Binding Marge,Converter={StaticResource ThicknessConverter}}"/>
        <Setter Property="ItemsSource" Value="{Binding Source}"/>
        <Setter Property="SelectedIndex" Value="{Binding IndexParDefaut}"/>
        <Setter Property="BorderThickness" Value="{Binding Bordure.Epaisseur,Converter={StaticResource ThicknessConverter}}"/>
        <Setter Property="BorderBrush" Value="{Binding Bordure.Foreground,Converter={StaticResource BackgroundToBrushConverter}}"/>
        <Setter Property="IsTabStop" Value="False"/>
        <Setter Property="Validation.errortemplate">
            <Setter.Value>
                <ControlTemplate >
                    <StackPanel>
                        <Border BorderBrush="Red" BorderThickness="3" >
                            <AdornedElementPlaceholder/>
                        </Border>
HERE I WOULD LIKE TO BIND THE FOREGROUND'S TEXTBLOCK TO MY COMBOBOX'S BACKGROUND PROPERTY.
                        <TextBlock Name="txtError" Text="{Binding [0].ErrorContent}" Foreground="Red" FontSize="20"/>
                    </StackPanel>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="SelectedItem">
            <Setter.Value>
                <Binding Path="ItemSelected" ValidatesOnNotifyDataErrors="True" >
                    <!--On ne passe pas par la validation rules pour le moment,mais on laisse cette partie du code commentée-->
                    <!--<Binding.ValidationRules>
                        <visualViewItems2:ValidationComboRules ValidatesOnTargetUpdated="False"/>
                    </Binding.ValidationRules>-->
                </Binding>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="Validation.HasError" Value="False">
                <Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self},Path=(Validation.Errors)[0].ErrorContent}"/>
            </Trigger>
        </Style.Triggers>
    </Style>

我尝试了这个但没有效果：

Foreground="{Binding RelativeSource={RelativeSource TemplatedParent},Path=Background}"

或

Foreground="{Binding Content.Background,RelativeSource={RelativeSource TemplatedParent}}

有人对此有任何想法吗？

谢谢