how to convert content of flow document to HTML (WPF)

private void RichTextEditor_Loaded(object sender, RoutedEventArgs e)
        {
            // Create a FlowDocument
            FlowDocument mcFlowDoc = new FlowDocument();

            // Create a paragraph with text
            Paragraph para = new Paragraph();
          //  para.Inlines.Add(new Run("Importance:High"));
             para.Inlines.Add(new Run(strImpNote));

            
            para.TextAlignment = TextAlignment.Left;
            para.FontSize = 14;
            para.FontFamily = new FontFamily("Arial");
            para.Inlines.Add(new LineBreak());

            

         //   para.Inlines.Add(new Bold(new Run("Test Bold")));

      
            // Add the paragraph to blocks of paragraph
            mcFlowDoc.Blocks.Add(para);



             string mydocpath =
             Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
             mydocpath = mydocpath.Replace('\\', '/') + "/dailymediaUntitled.png";


            Image image = new Image();
            image.Height =200;
            image.Width = 200;
            BitmapImage bimg = new BitmapImage();
            bimg.BeginInit();
            bimg.UriSource = new Uri(mydocpath, UriKind.Relative);
            bimg.EndInit();
            image.Source = bimg;
             mcFlowDoc.Blocks.Add(new BlockUIContainer(image));


             String str = DateTime.Now.ToString("d MMMM") + " " + DateTime.Now.Year.ToString() + strReportName;

             Paragraph para1 = new Paragraph();
             para1.Inlines.Add(new Run(str));
             para1.TextAlignment = TextAlignment.Left;
             para1.FontSize = 14;
             para1.FontFamily = new FontFamily("Arial");
             para1.Inlines.Add(new LineBreak());


             mcFlowDoc.Blocks.Add(para1);

             String strpres = strPresidentMsg;
             Paragraph para2 = new Paragraph();
             para2.Inlines.Add(new Run(strpres));
             para2.TextAlignment = TextAlignment.Left;
             para2.FontSize = 14;
             para2.FontFamily = new FontFamily("Arial");
             para2.Inlines.Add(new LineBreak());

          
             mcFlowDoc.Blocks.Add(para2);

             String strfoot = strFooterMsg;

             Paragraph para3 = new Paragraph();
             para3.Inlines.Add(new Run(strfoot));
             para3.TextAlignment = TextAlignment.Left;
             para3.FontSize = 14;
             para3.FontFamily = new FontFamily("Arial");
             para3.Inlines.Add(new LineBreak());

          
             mcFlowDoc.Blocks.Add(para3);

//How to convert mcFlowDoc to HTML
}