Split Documents

  • 4 minutes to read

The RichEditDocumentServer allows you to split documents into separate files. Follow the steps below to complete the task:

Obtain a Specific Document Part

You can use the following approaches to get a specific document part:


Use the Section.Range property to access the required section's range.


Call the DocumentLayout.GetPage method to iterate through the document pages. The LayoutPage.MainContentRange property returns the obtained page's range as a FixedRange object. Call the SubDocument.CreateRange method to convert the retrieved FixedRange to DocumentRange.

int pageCount = server.DocumentLayout.GetPageCount();
for (int i = 0; i < pageCount; i++)
    LayoutPage layoutPage = server.DocumentLayout.GetPage(i);
    DocumentRange mainBodyRange = sourceServer.Document.CreateRange(layoutPage.MainContentRange.Start, layoutPage.MainContentRange.Length);

Paragraphs with Headings (if Heading1, Heading2, etc. style is applied to the headings)

When you apply the Heading style to the paragraph, the paragraph's outline level changes. Find all paragraphs with the required Paragraph.OutlineLevel property value. Then obtain the range located between these paragraphs (including the paragraph with the heading).

Document document = server.Document;
List<Paragraph> paragraphs = document.Paragraphs.Where(paragraph => paragraph.OutlineLevel == 1).ToList();
for (int i = 0; i < paragraphs.Count; i++)
    DocumentRange range;
    DocumentPosition startPos = paragraphs[i].Range.Start;
    if (i == paragraphs.Count - 1)
      range = document.CreateRange(startPos, document.Range.End.ToInt() - startPos.ToInt());
      range = document.CreateRange(startPos, paragraphs[i + 1].Range.Start.ToInt() - startPos.ToInt());


You can get text from the DocumentRange instance. The table below shows the APIs used to retrieve and insert format-specific content:




Plain Text


SubDocument.AppendText - Appends the specified text.

SubDocument.AppendSingleLineText - Appends text as a single line.

SubDocument.InsertText - Inserts the specified text at the specified position.

SubDocument.InsertSingleLineText - Inserts a single line of text (text without line breaks) at the specified position.

Rich Text Format


SubDocument.AppendRtfText - Appends formatted text.

SubDocument.InsertRtfText - Inserts formatted text into the specified position.



SubDocument.AppendHtmlText - Appends HTML formatted text.

SubDocument.InsertHtmlText - Inserts the specified HTML text into the specified position.





OpenXML array


Save Document Parts as Separate Files

Call the SubDocument.AppendDocumentContent method to insert the retrieved range to the temporary RichEditDocumentServer instance.

Use the Document.SaveDocument method to save the result. Call the RichEditDocumentServer.ExportToPdf method to export files in PDF format.

The code sample below saves each document page as a separate RTF file.

int pageCount = sourceServer.DocumentLayout.GetPageCount();
for (int i = 0; i < pageCount; i++)
    DevExpress.XtraRichEdit.API.Layout.LayoutPage layoutPage = sourceServer.DocumentLayout.GetPage(i);
    DocumentRange mainBodyRange = sourceServer.Document.CreateRange(layoutPage.MainContentRange.Start, layoutPage.MainContentRange.Length);
    using (RichEditDocumentServer tempServer = new RichEditDocumentServer())
      //Delete last empty paragraph
      //Save the result
      tempServer.SaveDocument(String.Format("doc{0}.rtf", i), DocumentFormat.Rtf);  

Insert a Document Part into Another Document

Call the SubDocument.InsertDocumentContent method to insert the obtained DocumentRange in the given position in a document.

Save the result by calling the Document.SaveDocument method. Use the RichEditDocumentServer.ExportToPdf method to export the document to PDF format.

The code sample below inserts the source document's second paragraph in another document.

var server = new RichEditDocumentServer();
server.LoadDocument("Documents//Hans in luck.docx", DocumentFormat.OpenXml);
DocumentRange retrieveRange = server.Document.Paragraphs[2].Range;

var server1 = new RichEditDocumentServer();
server1.Document.InsertDocumentContent(server1.Document.Range.Start, retrieveRange);
server1.SaveDocument("secondParagraph.docx", DocumentFormat.OpenXml);