RichTextBox 的绑定List<String>方式。在 xaml 中:错误是List<string>?
<RichTextBox Grid.Row="1" Grid.ColumnSpan="3" 
     Style="{StaticResource RichTextBoxStyle}" Foreground="Red" 
     IsReadOnly="True">
    <FlowDocument>
        <List>
            <ListItem>
                <Paragraph>
                    <Run Text="{Binding Error}"/>
                </Paragraph>
            </ListItem>
        </List>
    </FlowDocument>
</RichTextBox>