C# ComboBox的ControlTemplate周围的边框

我有以下

控制模板

用于验证组合框

<ControlTemplate x:Key="ComboBoxHighlightTemplate" TargetType="Control">
    <Grid ClipToBounds="False">
        <Border BorderBrush="{StaticResource fokusBrush}" BorderThickness="2.5" Margin="-1" Visibility="{Binding ElementName=adornedElementHighligh,
            Path=AdornedElement.(Validation.Errors)[0].ErrorContent, Converter={StaticResource inverseErrorContentVisibilityConverter}}">
            <AdornedElementPlaceholder Name="adornedElementHighligh"/>
        </Border>

        <Border BorderBrush="Red" BorderThickness="1" Margin="-1" Visibility="{Binding ElementName=adornedElement,
            Path=AdornedElement.(Validation.Errors)[0].ErrorContent, Converter={StaticResource errorContentToErrorVisibilityConverter}}">
            <AdornedElementPlaceholder Name="adornedElement" />
        </Border>
        <Image HorizontalAlignment="Right" VerticalAlignment="Top" Visibility="{Binding ElementName=adornedElement,
            Path=AdornedElement.(Validation.Errors)[0].ErrorContent, Converter={StaticResource errorContentToErrorVisibilityConverter}}"
                Width="16" Height="16" Margin="0,-9,-9,0" Source="{x:Static helper:ImageHelper.ErrorImage}"
                ToolTip="{Binding ElementName=adornedElement, Path=AdornedElement.(Validation.Errors)[0].ErrorContent}" />
    </Grid>
</ControlTemplate>

一切正常。但是，如果我在组合框中产生错误，从而显示错误的ControlTemplate，则绘制的边框边界不在组合框的“真实”边框上

控制模板的用法如下所示：

这是一个示例模板，我尝试过为您简化它

    <ControlTemplate x:Key="ComboBoxHighlightTemplate"
                     TargetType="Control">
        <Grid ClipToBounds="False">
            <AdornedElementPlaceholder Name="adornedElement" />
            <Border BorderBrush="Red"
                    BorderThickness="1"
                    x:Name="errorBorder" />
            <Image HorizontalAlignment="Right"
                   VerticalAlignment="Top"
                   x:Name="image"
                   Width="16"
                   Height="16"
                   Margin="0,-9,-9,0"
                   Source="{x:Static helper:ImageHelper.ErrorImage}"
                   ToolTip="{Binding ElementName=adornedElement, Path=AdornedElement.(Validation.Errors)[0].ErrorContent}" />
        </Grid>
        <ControlTemplate.Triggers>
            <DataTrigger Binding="{Binding AdornedElement.(Validation.Errors)[0].ErrorContent, ElementName=adornedElement,Converter={StaticResource errorContentToErrorVisibilityConverter}}"
                         Value="Hidden">
                <Setter Property="BorderBrush"
                        TargetName="errorBorder"
                        Value="{StaticResource fokusBrush}" />
                <Setter Property="BorderThickness"
                        TargetName="errorBorder"
                        Value="2.5" />
                <Setter Property="Visibility"
                        TargetName="image"
                        Value="Collapsed" />
            </DataTrigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>



尝试一下，让我知道这与您的结果有多接近，我们还可以进一步简化触发器，我是在假设的基础上这样做的。
您是使用此模板进行验证。
错误模板还是其他模板？哦。忘记添加代码了。我使用它进行
验证。ErrorTemplate
它非常接近最终解决方案。我在图像中添加了
Visibility=“{Binding ElementName=adornedElement，Path=adornedElement.（Validation.Errors）[0]。ErrorContent，Converter={StaticResource errorContentToErrorVisibilityConverter}}”
，现在它就完美了。谢谢，太好了！快乐编码：）
    <ControlTemplate x:Key="ComboBoxHighlightTemplate"
                     TargetType="Control">
        <Grid ClipToBounds="False">
            <AdornedElementPlaceholder Name="adornedElement" />
            <Border BorderBrush="Red"
                    BorderThickness="1"
                    x:Name="errorBorder" />
            <Image HorizontalAlignment="Right"
                   VerticalAlignment="Top"
                   x:Name="image"
                   Width="16"
                   Height="16"
                   Margin="0,-9,-9,0"
                   Source="{x:Static helper:ImageHelper.ErrorImage}"
                   ToolTip="{Binding ElementName=adornedElement, Path=AdornedElement.(Validation.Errors)[0].ErrorContent}" />
        </Grid>
        <ControlTemplate.Triggers>
            <DataTrigger Binding="{Binding AdornedElement.(Validation.Errors)[0].ErrorContent, ElementName=adornedElement,Converter={StaticResource errorContentToErrorVisibilityConverter}}"
                         Value="Hidden">
                <Setter Property="BorderBrush"
                        TargetName="errorBorder"
                        Value="{StaticResource fokusBrush}" />
                <Setter Property="BorderThickness"
                        TargetName="errorBorder"
                        Value="2.5" />
                <Setter Property="Visibility"
                        TargetName="image"
                        Value="Collapsed" />
            </DataTrigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>