Selective download document based on table of content

Hi Thahir,
How can I join multiple documents (first few pages for cover page,follows a template for writing TOC, follows different sections document) as a single document and write/update table of content in the final document?

Regards,
Rajesh

@Rajeshraj1983,

Thanks for your inquiry. Please refer to the following article.
Joining and Appending Documents

After joining the documents, move the cursor to the document start and insert the table of content field.

Please call Document.UpdateFields method before saving the document to update the TOC and other fields in document.