Hi Ho-Ching Yung,
You can clone all the paragraphs from current section and merge it in to the new document by using the following code snippets:
[C#]
// Enumerate all the sections from the first template document.
IWSectionCollection secs1 = document1.Sections;
foreach (IWSection sec in secs1)
{
// Adding a new section to the newly created document.
doc.Sections.Add(new WSection (doc));
// Setting section break code to be the same as the template.
doc.LastSection.BreakCode = sec.BreakCode;
// Enumerating all the paragraphs in the current section.
IWParagraphCollection paragraphs = sec.Paragraphs;
// Cloning all the paragraphs from current section and merge it in to the new document.
foreach (IWParagraph paragraph in paragraphs)
doc.LastSection.Paragraphs.Add(paragraph.Clone(doc));
}
Here is the sample for your reference:
http://websamples.syncfusion.com/samples/DocIO.Web/4.4.0.51/33404/main.htmKindly let me know if you have any other questions.
Thank you for your interest in Syncfusion products.
Best Regards,
Bhuvaneswari