如何將FlowDocument附加到RichTextBox？

Question

我想將richTextBox2.Document附加到richTextBox1，但WPF不支持聯合2 FlowDocument。有沒有辦法做到這一點？非常感謝你！

Answer 1

using System.Text.RegularExpressions; 
using System.Windows.Markup; 

    richTextBox1.Document = Joint_FlowDocument(richTextBox1.Document, richTextBox2.Document); 

    //Joint flowDocument_2 to the end of flowDocument_1 
    private FlowDocument Joint_FlowDocument(FlowDocument flowDocument_1, FlowDocument flowDocument_2) 
    { 
     StringWriter wr_f1 = new StringWriter(); 
     XamlWriter.Save(flowDocument_1, wr_f1); 
     string str_f1 = wr_f1.ToString().Replace("</FlowDocument>", ""); 
     StringWriter wr_f2 = new StringWriter(); 
     XamlWriter.Save(flowDocument_2, wr_f2); 
     string str_f2 = wr_f2.ToString(); 
     str_f2 = Regex.Replace(str_f2, "<FlowDocument.*?>", ""); 
     return XamlReader.Parse(str_f1 + str_f2) as FlowDocument; 
    }