add image to word document header

Hello guys,

I can manipulate an existing word document  header in a SharePoint library and insert a text header to it.

However, I am having some chanllenges adding an image to a header into a word document here is my code. When I run this code I don't get to see the image in the header, all I see is x image which says image cannot be displayed.

Please assist

static void Main(string[] args)
   {

       
string siteUrl = "http://moss";

 using (SPSite spSite = new SPSite(siteUrl))
 {

 Console.WriteLine("Querying for doc.docx");
 SPList list = spSite.RootWeb.Lists["Test"];
 SPQuery query = new SPQuery();
 query.ViewFields = @"<FieldRef Name='FileLeafRef' />";
 query.Query =
 @"<Where>
 <Eq>
 <FieldRef Name='FileLeafRef' />
 <Value Type='Text'>doc.docx</Value>
 </Eq>
 </Where>";
 SPListItemCollection collection = list.GetItems(query);
 if (collection.Count != 1)
 {
 Console.WriteLine("doc.docx not found");
 Environment.Exit(0);
 }
 Console.WriteLine("Opening");
 SPFile file = collection[0].File;
 byte[] byteArray = file.OpenBinary();
 const string wordmlNamespace = "http://schemas.openxmlformats.org/wordprocessingml/2006/main";
 const string relationshipNamespace = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";
 string reference = "w:headerReference";
 using (MemoryStream memStr = new MemoryStream())
 {
 memStr.Write(byteArray, 0, byteArray.Length);
 using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(memStr, true))
 {
 Document document = wordDoc.MainDocumentPart.Document;
document.MainDocumentPart.DeleteParts(document.MainDocumentPart.FooterParts);
 document.MainDocumentPart.DeleteParts(document.MainDocumentPart.HeaderParts);

AddPicHeader(wordDoc);

 }

 Console.WriteLine("Saving");
 string linkFileName = file.Item["LinkFilename"] as string;
 file.ParentFolder.Files.Add(linkFileName, memStr, true);
 }

 }
 }

   public static Header Mkpicheader(WordprocessingDocument doc, string relationshipId)
        {
             //Define the reference of the image.
                    
                   var element =
                        new Drawing(
                            new DW.Inline(
                                new DW.Extent() { Cx = 990000L, Cy = 792000L },
                                new DW.EffectExtent()
                                {
                                    LeftEdge = 0L,
                                    TopEdge = 0L,
                                    RightEdge = 0L,
                                    BottomEdge = 0L
                                },
                                new DW.DocProperties()
                                {
                                    Id = (UInt32Value)1U,
                                    Name = "Picture 1"
                                },
                                new DW.NonVisualGraphicFrameDrawingProperties(
                                    new A.GraphicFrameLocks() { NoChangeAspect = true }),
                                new A.Graphic(
                                    new A.GraphicData(
                                        new PIC.Picture(
                                            new PIC.NonVisualPictureProperties(
                                                new PIC.NonVisualDrawingProperties()
                                                {
                                                    Id = (UInt32Value)0U,
                                                    Name = "oando-logo.png"
                                                },
                                                new PIC.NonVisualPictureDrawingProperties()),
                                            new PIC.BlipFill(
                                                new A.Blip(
                                                    new A.BlipExtensionList(
                                                        new A.BlipExtension()
                                                        {
                                                            Uri =
                                                              "{28A0092B-C50C-407E-A947-70E740481C1C}"
                                                        })
                                                )
                                                {
                                                    Embed = relationshipId,
                                                    CompressionState =
                                                    A.BlipCompressionValues.Print
                                                },
                                                new A.Stretch(
                                                    new A.FillRectangle())),
                                            new PIC.ShapeProperties(
                                                new A.Transform2D(
                                                    new A.Offset() { X = 0L, Y = 0L },
                                                    new A.Extents() { Cx = 990000L, Cy = 792000L }),
                                                new A.PresetGeometry(
                                                    new A.AdjustValueList()
                                                ) { Preset = A.ShapeTypeValues.Rectangle }))
                                    ) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
                            )
                            {
                                DistanceFromTop = (UInt32Value)0U,
                                DistanceFromBottom = (UInt32Value)0U,
                                DistanceFromLeft = (UInt32Value)0U,
                                DistanceFromRight = (UInt32Value)0U,
                                EditId = "50D07946"
                            });

                   var header = new Header();
                   var paragraph = new Paragraph();
                   var run = new Run();
                   
                   run.Append(element);
                   paragraph.Append(run);
                   header.Append(paragraph);
                   return header;
                   
                   //newHeaderPart.Header = header;
                  // wordDoc.MainDocumentPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
               }
        public static void AddPicHeader(WordprocessingDocument doc)
        {
            ImagePart imgPart=doc.MainDocumentPart.AddImagePart(ImagePartType.Png);
            var imagePartID = doc.MainDocumentPart.GetIdOfPart(imgPart);
            using (Stream targetStream = imgPart.GetStream())
            {
                using (FileStream sourceStream = new FileStream("../../officelogo.gif", FileMode.Open, FileAccess.Read))
                {
                    byte[] buffer = new byte[1024];
                    int nrBytesWritten = sourceStream.Read(buffer, 0, 1024);
                    while (nrBytesWritten > 0)
                    {
                        targetStream.Write(buffer, 0, nrBytesWritten);
                        nrBytesWritten = sourceStream.Read(buffer, 0, 1024);
                    }
                }
            }
            if (doc.MainDocumentPart.HeaderParts.Count() == 0)
            {
                doc.MainDocumentPart.DeleteParts(doc.MainDocumentPart.HeaderParts);
                var newHeaderPart = doc.MainDocumentPart.AddNewPart<HeaderPart>();
                var rId = doc.MainDocumentPart.GetIdOfPart(newHeaderPart);
                var headerRef = new HeaderReference();
                headerRef.Id = rId;
                var sectionProps = doc.MainDocumentPart.Document.Body.Elements<SectionProperties>().LastOrDefault();
                if (sectionProps == null)
                {
                    sectionProps = new SectionProperties();
                    doc.MainDocumentPart.Document.Body.Append(sectionProps);
                }
                sectionProps.RemoveAllChildren<HeaderReference>();
                sectionProps.Append(headerRef);
              newHeaderPart.Header=Mkpicheader(doc,imagePartID);
                newHeaderPart.Header.Save();
            }
        }

I think your issue is that your adding the image to the MainDocumentPart rather than the part the image resides in (header). You'll may need to use AddNewPart<ImagePart>("image/png", null) rather than AddImagePart.