如何调整ValidationErrorTemplate边框的宽度？

Question

每当用户在DataGridCell中输入无效值时，我都会突出显示完整的行和特定的单元格。 我发现，在验证后我 减少 列的宽度时，无效单元格的红色边框会扭曲其大小/宽度。即当我减小单元格/列的宽度时，红色边框保持原来的大小，现在到达下一列。

当我增加列的宽度时，边框将完美地适应。
当我再次减小列的宽度时，它也可以完美地调整边框的宽度，但是直到初始单元格/列的宽度为止。如果我进一步减小宽度，则边框的最小宽度就是其初始宽度（这是单元格/列的初始宽度）。

如何将边框的大小调整为当前列的宽度？

<Setter Property="ValidationErrorTemplate">
    <Setter.Value>
        <ControlTemplate>
            <Grid>
                <Border BorderBrush="red" BorderThickness="1" Background="#11FF0000" Opacity="0.5" IsHitTestVisible="False" x:Name="errorBorder"/>
                <Ellipse Width="12" Height="12" Fill="Red" Stroke="Black" StrokeThickness="0.5"/>
                <TextBlock FontWeight="Bold" Padding="4,0,0,0" Margin="0" VerticalAlignment="Top" Foreground="White" Text="!" ToolTip="{Binding Notification.GetAllErrors}"/>
            </Grid>
        </ControlTemplate>
    </Setter.Value>
</Setter>

也许设置MaxWidth =“”？我该怎么办？

更新2019-01-30： 我在外部Style.xaml中定义此样式，并在另一样式中将其用于同一Style.xaml：

<Style x:Key="NotificationDataGridRow" TargetType="{x:Type DataGridRow}">
    <Setter Property="FontSize" Value="16"/>
    <Setter Property="Height" Value="Auto"/>
    <Setter Property="FontFamily" Value="ArialMT"/>
    <Setter Property="VerticalAlignment" Value="Center"/>
    <Style.Triggers>
        <DataTrigger Binding="{Binding Path=(Validation.HasError), RelativeSource={RelativeSource Self}}" Value="true" >
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="BorderBrush" Value="Red"/>
            <Setter Property="IsEnabled" Value="True" />
            <Setter Property="ValidationErrorTemplate">
                <Setter.Value>
                    <ControlTemplate>
                        <Grid>
                            <Border BorderBrush="red" BorderThickness="1" Background="#11FF0000" Opacity="0.5" IsHitTestVisible="False" x:Name="errorBorder"/>
                            <Ellipse Width="12" Height="12" Fill="Red" Stroke="Black" StrokeThickness="0.5"/>
                            <TextBlock FontWeight="Bold" Padding="4,0,0,0" Margin="0" VerticalAlignment="Top" Foreground="White" Text="!" ToolTip="{Binding Notification.GetAllErrors}"/>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </DataTrigger>
        <DataTrigger Binding="{Binding Path=(Validation.HasError), RelativeSource={RelativeSource Self}}" Value="false" >
            <Setter Property="ToolTip" Value="{x:Null}"/>
            <Setter Property="IsEnabled" Value="True" />
        </DataTrigger>
    </Style.Triggers>
</Style>

依次将其分配给DataGrid：

  <Grid KeyboardNavigation.TabNavigation="Local">
    <ct_ctrls:CTDataGrid x:Name="tagsGrid" ItemsSource="{Binding}" GridLinesVisibility="Vertical" AlternatingRowBackground="#C3DDE5" 
                         AutoGenerateColumns="False" CanUserAddRows="True" IsReadOnly="False" 
                         SelectionUnit="Cell" SelectionMode="Extended" BorderThickness="3" RowStyle="{StaticResource RawTagDataGridRow}">
        <DataGrid.Columns>
            <DataGridTextColumn x:Name="TagName" Header="Tag" Width="*" 
                                Binding="{Binding Mode=TwoWay, Path=RawTag.TagName, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}"
                                ElementStyle="{StaticResource ResourceKey=textBlockErrStyle}" />
            <DataGridTextColumn x:Name="TagCycle" Header="Cycle" 
                                Binding="{Binding Mode=TwoWay, Path=RawTag.Cycle, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}" 
                                ElementStyle="{StaticResource ResourceKey=textBlockErrStyle}">
            </DataGridTextColumn>
            <DataGridTextColumn x:Name="TagSource" Header="Source" Width="*" 
                                Binding="{Binding Mode=TwoWay, Path=RawTag.Source, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=True, NotifyOnValidationError=True}"
                                ElementStyle="{StaticResource ResourceKey=textBlockErrStyle}"/>
            <DataGridTextColumn x:Name="Unassigned" Header="unassigned" Width="*" KeyboardNavigation.TabIndex="4"
                                Binding="{Binding Mode=OneWay, Path=RawTag.Unassigned, UpdateSourceTrigger=PropertyChanged, ValidatesOnNotifyDataErrors=False}"
                                ElementStyle="{StaticResource ResourceKey=textBlockUnassignedStyle}"/>
            <DataGridTemplateColumn x:Name="editTagColumn" Header="" CanUserResize="True" >
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <WrapPanel>
                            <Button x:Name="btnTagDelete" Click="BtnTagDelete_Click" CommandParameter="{Binding}" Height="15" Width="15" Margin="2">
                                <Button.Content>
                                    <Image Source="../Resources/delete.png"></Image>
                                </Button.Content>
                            </Button>
                        </WrapPanel>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
        </DataGrid.Columns>
    </ct_ctrls:CTDataGrid>
</Grid>