OpenXML Images added with AddImagePart not showing up in document.xml.rels

Question

I'm trying to add an image to an existing Word 2010 document using OpenXML SDK 2.5. But when I add the image the image does not get embedded. When I open the document, the image shows the placeholder with a red cross (as if the image cannot be found). I'm using the following code:

string mimetype = String.Empty;
// :
//Find mime type of the image here
// :
imagePart = wpd.MainDocumentPart.AddImagePart(mimetype);

using (FileStream stream = new FileStream(filename, FileMode.Open))
{
    image = new Bitmap(stream);
    cy = Convert.ToUInt32(image.PhysicalDimension.Height);
    cx = Convert.ToUInt32(image.PhysicalDimension.Width);
    imagePart.FeedData(stream);
    stream.Close();
 }
 Paragraph para = FindParagraphInAppendix(....); //Find the paragraph to add
 if (para != null)
    AddImageToParagraph(para, wpd.MainDocumentPart.GetIdOfPart(imagePart),txt, filename,cx,cy);
 else
      wpd.MainDocumentPart.Document.Body.Append(GetImageWithPara(wpd.MainDocumentPart.GetIdOfPart(imagePart), filename, cx, cy));
wpd.Package.CreateRelationship(imagePart.Uri, System.IO.Packaging.TargetMode.External,wpd.MainDocumentPart.GetIdOfPart(imagePart));
wpd.MainDocumentPart.Document.Save();

In the code for AddImageToParagraph I'm adding the image as follows:

Pic.BlipFill blipFill1 = new Pic.BlipFill();
A.Blip blip1 = new A.Blip() { Embed = relationshipid,
                             CompressionState = A.BlipCompressionValues.Print };
A.BlipExtensionList blipExtensionList1 = new A.BlipExtensionList();

When I open the file generated using Winzip, the document.xml.rels file does not contain a relationship ID associated with the embedded image.

When I open the using OpenXML Productivity tool and validate the XML I get the error : "The relationship 'R75a8cc179...' referenced by attribute 'hxxp://schemas.openxmlformats..../relationships:embed' does not exist Can you help?

Thanks!

Answer 1

I've finally figured this out The issue was after the MainDocumentPart was edited I was only calling wordProcessingDocument.MainDocumentPart.Save(). I was not calling the Close() method. Due to this the ImagePart relationship was not being committed into the package. I think the Close() method causes the relationship to be "written" to word\_rels\document.xml.rels section of the docx package!