wpf Validation style

   <Trigger Property="Validation.HasError" Value="True">
                            <Setter TargetName="Bd" Property="BorderBrush" Value="Red"/>
                        </Trigger>

<Setter Property="Validation.ErrorTemplate">
            <Setter.Value>
                <ControlTemplate>
                    <!--<AdornedElementPlaceholder>
                        <Border BorderBrush="Red" BorderThickness="1" CornerRadius="5" SnapsToDevicePixels="True" />

                    </AdornedElementPlaceholder>-->
                </ControlTemplate>
            </Setter.Value>
        </Setter>

  <Setter 
                Property="Validation.ErrorTemplate" 
                Value="{DynamicResource InputErrorTemplate}" 
            />
        <Style.Triggers>
            <Trigger Property="Validation.HasError" Value="True">
                <Setter Property="ToolTip">
                    <Setter.Value>
                        <Binding 
                            Path="(Validation.Errors).CurrentItem.ErrorContent"
                            RelativeSource="{x:Static RelativeSource.Self}"
                            />
                    </Setter.Value>
                </Setter>
            </Trigger>
        </Style.Triggers>