C# 如何将连续XML转换为缩进XML？

我有一个xml

<FlowDocument xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"><Paragraph TextAlignment="Left" FontFamily="Arial" NumberSubstitution.CultureSource="User"><Run FontSize="15">Foo Bar</Run></Paragraph></FlowDocument>

---

将文本加载到（请参阅），然后在新实例上使用。

您的意思是，仅用于查看或代码？@Ilykogan:请阅读更新的问题。

<FlowDocument xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
    <Paragraph TextAlignment="Left" FontFamily="Arial" NumberSubstitution.CultureSource="User">
        <Run FontSize="15">Foo Bar</Run>
    </Paragraph>
</FlowDocument>

TxtBox1.Text = XamlWriter.Save(MyFlowDocument);