你好,
>>为什么RichTextBlock文本属性那部分是灰色的不可更改呢
请查看RichTextBlock的官方文档:https://msdn.microsoft.com/zh-cn/library/windows/apps/windows.ui.xaml.documents.paragraph.aspx
注意属性部分,除了TextAlignment,是没有截图中所提到的段落属性的。至于字体设置,可以切换排列依据为名称, 即可修改:

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