InvalidDataException by saving an OpenXml document

Question

My code is intended to create a docx document, taking the parts from more documents and merge them into one.

private void CopyContent(WordprocessingDocument sourceDoc, WordprocessingDocument targetDoc)
{
    // copy parts from source document to new document
    foreach (var part in sourceDoc.Parts)
        targetDoc.AddPart(part.OpenXmlPart, part.RelationshipId);

    using (var sr = new StreamReader(sourceDoc.MainDocumentPart.GetStream()))
    using (var sw = new StreamWriter(targetDoc.MainDocumentPart.GetStream(FileMode.Create)))
    {
        sw.Write(sr.ReadToEnd());
    }
    targetDoc.MainDocumentPart.Document.Save();
}

The code is only a snipped, it works fine for docx created by Office 2013, but it fails if the document was a doc (created by an older version of office) saved as docx by Office 2013. It rises the following error once targetDoc.MainDocumentPart.Document.Save() is executed.

{"The root XML element \"http://purl.oclc.org/ooxml/wordprocessingml/main:document\" in the part is incorrect. The expected root XML element is: \"http://schemas.openxmlformats.org/wordprocessingml/2006/main:document\"."}

What does it mean? How could I solve it?

Well, from the error message you show, the document has been saved as Word 2003 XML, not as a Word 2013 docx (Word Open XML). Possibly, the file needs to be opened again in the Word UI and the CONVERT function used, either in VBA or using File/Convert in the UI. — Cindy Meister, Mar 29 '16 at 18:03

score 0 · Answer 1 · edited May 23 '17 at 12:31

0

You need to convert the .doc file to .docx before processing it. To achieve that you can use the Microsoft.Office.Interop.Word library.

Some examples here

edited May 23 '17 at 12:31

Community

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answered Mar 22 '16 at 13:18

Massimiliano Peluso

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But i'm not loading a doc file... i have a docx file which WAS a doc. – Emaborsa Mar 22 '16 at 13:22

InvalidDataException by saving an OpenXml document

1 Answers1