How to access OpenXML content by page number?

Question

Using OpenXML, can I read the document content by page number?

wordDocument.MainDocumentPart.Document.Body gives content of full document.

Answer 1

You cannot reference OOXML content via page numbering at the OOXML data level alone.

• Hard page breaks are not the problem; hard page breaks can be counted.
• Soft page breaks are the problem. These are calculated according to line break and pagination algorithms which are implementation dependent; it is not intrinsic to the OOXML data. There is nothing to count.

What about w:lastRenderedPageBreak, which is a record of the position of a soft page break at the time the document was last rendered? No, w:lastRenderedPageBreak does not help in general either because:

• By definition, w:lastRenderedPageBreak position is stale when content has been changed since last opened by a program that paginates its content.
• In MS Word's implementation, w:lastRenderedPageBreak is known to be unreliable in various circumstances including
  1. when table spans two pages
  2. when next page starts with an empty paragraph
  3. for multi-column layouts with text boxes starting a new column
  4. for large images or long sequences of blank lines

If you're willing to accept a dependence on Word Automation, with all of its inherent licensing and server operation limitations, then you have a chance of determining page boundaries, page numberings, page counts, etc.

Otherwise, the only real answer is to move beyond page-based referencing frameworks that are dependent upon proprietary, implementation-specific pagination algorithms.

Answer 2

This is how I ended up doing it.

  public void OpenWordprocessingDocumentReadonly()
        {
            string filepath = @"C:\...\test.docx";
            // Open a WordprocessingDocument based on a filepath.
            Dictionary<int, string> pageviseContent = new Dictionary<int, string>();
            int pageCount = 0;
            using (WordprocessingDocument wordDocument =
                WordprocessingDocument.Open(filepath, false))
            {
                // Assign a reference to the existing document body.  
                Body body = wordDocument.MainDocumentPart.Document.Body;
                if (wordDocument.ExtendedFilePropertiesPart.Properties.Pages.Text != null)
                {
                    pageCount = Convert.ToInt32(wordDocument.ExtendedFilePropertiesPart.Properties.Pages.Text);
                }
                int i = 1;
                StringBuilder pageContentBuilder = new StringBuilder();
                foreach (var element in body.ChildElements)
                {
                    if (element.InnerXml.IndexOf("<w:br w:type=\"page\" />", StringComparison.OrdinalIgnoreCase) < 0)
                    {
                        pageContentBuilder.Append(element.InnerText);
                    }
                    else
                    {
                        pageviseContent.Add(i, pageContentBuilder.ToString());
                        i++;
                        pageContentBuilder = new StringBuilder();
                    }
                    if (body.LastChild == element && pageContentBuilder.Length > 0)
                    {
                        pageviseContent.Add(i, pageContentBuilder.ToString());
                    }
                }
            }
        }

Downside: This wont work in all scenarios. This will work only when you have a page break, but if you have text extended from page 1 to page 2, there is no identifier to know you are in page two.

Answer 3

List<Paragraph> Allparagraphs = wp.MainDocumentPart.Document.Body.OfType<Paragraph>().ToList();

List<Paragraph> PageParagraphs = Allparagraphs.Where (x=>x.Descendants<LastRenderedPageBreak>().Count() ==1) .Select(x => x).Distinct().ToList();

Answer 4

Rename docx to zip. Open docProps\app.xml file. :

 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes">
  <Template>Normal</Template>
  <TotalTime>0</TotalTime>
  <Pages>1</Pages>
  <Words>141</Words>
  <Characters>809</Characters>
  <Application>Microsoft Office Word</Application>
  <DocSecurity>0</DocSecurity>
  <Lines>6</Lines>
  <Paragraphs>1</Paragraphs>
  <ScaleCrop>false</ScaleCrop>
  <HeadingPairs>
    <vt:vector size="2" baseType="variant">
      <vt:variant>
        <vt:lpstr>Название</vt:lpstr>
      </vt:variant>
      <vt:variant>
        <vt:i4>1</vt:i4>
      </vt:variant>
    </vt:vector>
  </HeadingPairs>
  <TitlesOfParts>
    <vt:vector size="1" baseType="lpstr">
      <vt:lpstr/>
    </vt:vector>
  </TitlesOfParts>
  <Company/>
  <LinksUpToDate>false</LinksUpToDate>
  <CharactersWithSpaces>949</CharactersWithSpaces>
  <SharedDoc>false</SharedDoc>
  <HyperlinksChanged>false</HyperlinksChanged>
  <AppVersion>14.0000</AppVersion>
</Properties>

OpenXML lib reads wordDocument.ExtendedFilePropertiesPart.Properties.Pages.Text from <Pages>1</Pages> property . This properies are created only by winword application. if word document changed wordDocument.ExtendedFilePropertiesPart.Properties.Pages.Text is not actual. if word document created programmatically the wordDocument.ExtendedFilePropertiesPart is offten null.