RichTextBox Wpf中的C＃字符串

yourRichTextBox.AppendText(BodyString);

// Create a FlowDocument to contain content for the RichTextBox.
FlowDocument myFlowDoc = new FlowDocument();

// Add paragraphs to the FlowDocument.
myFlowDoc.Blocks.Add(new Paragraph(new Run(\"Paragraph 1\")));
myFlowDoc.Blocks.Add(new Paragraph(new Run(\"Paragraph 2\")));
myFlowDoc.Blocks.Add(new Paragraph(new Run(\"Paragraph 3\")));
RichTextBox myRichTextBox = new RichTextBox();

// Add initial content to the RichTextBox.
myRichTextBox.Document = myFlowDoc;