在百度知道发现的，链接 ：https://zhidao.baidu.com/question/117596025.html
样式
<Window.Resources> <Style x:Key="{x:Type DocumentViewer}" TargetType="{x:Type DocumentViewer}"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" /> <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" /> <Setter Property="FocusVisualStyle" Value="{x:Null}" /> <Setter Property="BorderThickness" Value="0"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type DocumentViewer}"> <Border BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Focusable="False"> <Grid KeyboardNavigation.TabNavigation="Local"> <Grid.Background> <SolidColorBrush Color="{DynamicResource ControlLightColor}" /> </Grid.Background> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <ScrollViewer Grid.Row="1" CanContentScroll="true" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Disabled" x:Name="PART_ContentHost" IsTabStop="true" Padding="0" BorderThickness="0"> <ScrollViewer.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="{DynamicResource ControlLightColor}" Offset="0" /> <GradientStop Color="{DynamicResource ControlMediumColor}" Offset="1" /> </LinearGradientBrush> </ScrollViewer.Background> </ScrollViewer> </Grid> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> </Window.Resources>使用
<DocumentViewer x:Name="docViewer" Grid.Column="1" Grid.Row="1" > </DocumentViewer>