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Convert OpenXML WordprocessingDocument to FlowDocument without writing to disk

I’m looking for the best way to convert from a WordprocessingDocument object my application already creates (I can’t change this) into a FlowDocument for use in a WPF application.

What’s the best method for doing this via Aspose?

I would like to avoid using any temporary files, and do all the conversion in memory.

Here’s what I have, currently, that does use temporary files. This is in a sample application, so you’ll see the creation of the WordprocessingDocument object, but this is something that I can’t get away from in the real application; though I do have some control over how the WordprocessingDocument gets created.

As you’ll see, I currently write the WordprocessingDocument to a file, open it with Aspose, save it to a MemoryStream (doing a conversion in the process) and then stripping out some text, so that I can use XamlReader.Parse to convert it into an actual FlowDocument object. That just seems like a lot of hoops to jump through, and I’m hoping that there’s a simpler method that Aspose provides.

private FlowDocument LoadDocXFileAsFlowDocument(string filePath)
// Start simulation of real application
string tempFilePath = null;
WordprocessingDocument wpDoc = null;
MemoryStream stream = null;

tempFilePath = Path.Combine(Path.GetTempPath(), Path.GetTempFileName());
var byteArray = File.ReadAllBytes(filePath);
stream = new MemoryStream();
stream.Write(byteArray, 0, byteArray.Length);

wpDoc = WordprocessingDocument.Open(stream, false);

// End simulation of real application

// Begin conversion from WordprocessingDocument to FlowDocument
// This is the section I’m really looking to replace

File.WriteAllBytes(tempFilePath, stream.ToArray());

var asposeDoc = new Document(tempFilePath);
using (var ms = new MemoryStream())
asposeDoc.Save(ms, SaveFormat.XamlFlow);

var s = Encoding.UTF8.GetString(ms.ToArray());
var startIndex = s.IndexOf(’<’);
var stopIndex = s.LastIndexOf(’>’);
s = s.Substring(startIndex, stopIndex - startIndex + 1);
s = Regex.Replace(s.Trim(), @"^<?xml.+?>(?=<)", string.Empty);

var convertedFlowDocument = XamlReader.Parse(s) as FlowDocument;

return convertedFlowDocument;

// End conversion from WordprocessingDocument to FlowDocument
// Continue simulation of real application

if (File.Exists(tempFilePath))

if (wpDoc != null)

if (stream != null)

Hi Nathan,

Thanks for your inquiry. Please use Document Constructor (Stream) to open an existing document from a stream. Set the MemoryStream.Position to 0 and load the document from stream object.

If you still face problem, please share following detail for investigation purposes.

  • Please attach your input document (WordprocessingDocument).
  • Please

    create a standalone/runnable simple application (for example a Console
    Application Project
    ) that demonstrates the code (Aspose.Words code) you used to generate
    your output document

  • Please attach the output Word file that shows the undesired behavior.
  • Please
    attach your target Word document showing the desired behavior. You can
    use Microsoft Word to create your target Word document. I will
    investigate as to how you are expecting your final document be generated

As soon as you get these pieces of information to
us we’ll start our investigation into your issue.