是否可以为 RichTextBox 中预先创建的段落赋值
考虑以下 XAML 代码：
<RichTextBox Name="dataRichTextBox" VerticalScrollBarVisibility="Auto" >
<FlowDocument Name="dataFlowDocument" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Paragraph Name="dataParagraph">
</Paragraph>
</FlowDocument>
</RichTextBox>
我想要做的是，直接将以编程方式创建的 Paragraph 分配给 dataParagraph，如 <强>XAML。
其代码看起来像这样：
Paragraph paraOne = new Paragraph();
Run run1 = new Run("I am run one"+Environment.NewLine);
// run1.Background = Brushes.Green;
paraOne.Inlines.Add(run1);
dataParagraph = paraOne; // expect that it will show up on the RichTextBox.
我已经尝试过了，但它不起作用。到目前为止，我读到的示例似乎都是以编程方式创建 FlowDocument、Paragraph，然后将 Runs 分配给它们。是否可以按照我实现的方式实现它。
Consider the following XAML code:
<RichTextBox Name="dataRichTextBox" VerticalScrollBarVisibility="Auto" >
<FlowDocument Name="dataFlowDocument" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Paragraph Name="dataParagraph">
</Paragraph>
</FlowDocument>
</RichTextBox>
What I would like to do is, directly assign a a Paragraph, created programmatically, to dataParagraph as defined in the XAML.
the code for that looks something like:
Paragraph paraOne = new Paragraph();
Run run1 = new Run("I am run one"+Environment.NewLine);
// run1.Background = Brushes.Green;
paraOne.Inlines.Add(run1);
dataParagraph = paraOne; // expect that it will show up on the RichTextBox.
I have tried it, and it doesn't work. The examples I read so far, all seem to create the FlowDocument, Paragraph Programmatically and then assign Runs' to them. Is it possible to achieve it the way I have implemented.
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您无法将 XAML 中声明的段落替换为新段落，但可以直接使用它。
保持 XAML 不变，将代码更改为此，它将起作用：
或者，只需将新段落添加到
FlowDocument中，而不是尝试将其分配给现有段落。You can't replace the paragraph declared in XAML with a new one, but you can work with it directly.
Keeping your XAML as-is, change your code to this, and it will work:
Alternatively, just add the new paragraph to the
FlowDocument, rather than trying to assign it to the existing paragraph.