段落边框在FlowDocument内部显得模糊，SnapsToDevicePixels和UseLayoutRounding都不起作用

Question

当我使用BorderThickness属性在Paragraph中的FlowDocument内的FlowDocumentScrollViewer元素上绘制边框时，边框似乎模糊有时。

这是我的代码段。

<Grid>
    <FlowDocumentScrollViewer>
        <FlowDocument>
            <Paragraph BorderBrush="Black" BorderThickness="0.5">This is a paragraph</Paragraph>
            <Paragraph BorderBrush="Black" BorderThickness="0.5">This is a paragraph</Paragraph>
            <Paragraph BorderBrush="Black" BorderThickness="0.5">This is a paragraph</Paragraph>
        </FlowDocument>
    </FlowDocumentScrollViewer>
</Grid>

我尝试将SnapsToDevicePixels="True"和UseLayoutRounding="True"放在Grid或FlowDocumentScrollViewer上（因为Paragraph本身不支持这些属性），但没有任何事情发生。

这个问题仍然是个问题吗？如果没有，我该如何解决？

Answer 1

<Grid RenderOptions.EdgeMode="Aliased">
        <FlowDocumentScrollViewer>
            <FlowDocument>
                <Paragraph Margin="2" BorderBrush="Black" BorderThickness=".5">This is a paragraph</Paragraph>
                <Paragraph Margin="2" BorderBrush="Black" BorderThickness=".5">This is a paragraph</Paragraph>
                <Paragraph Margin="2" BorderBrush="Black" BorderThickness=".5">This is a paragraph</Paragraph>
            </FlowDocument>
        </FlowDocumentScrollViewer>
    </Grid>