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Open XML SDK - AddImagePart - change image location from / media to / word / media

I am trying to insert an image into a document from C # using the Open XML SDK 2.5. The document will then be uploaded to Google Drive and converted to Google Doc.

I am currently using the MainDocumentPart.AddImagePart method, which inserts an image into the /media folder of the file hierarchy. However, Drive only wants to read the image if it is in the /word/media folder.

Opening a document in Microsoft Word and saving it again moves the image to the /word/media folder (and updates the part relationships) and thus allows Google to read the image, but the file will not be edited in Word before downloading to disk.

Is there a way to place the image in the /word/media folder without closing the file in the Open XML SDK, opening it as a zip archive, moving the images and updating the relationship manually?

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To add an image to the /word/media folder using the Open XML SDK 2.5, you must create a part of the image package yourself. The AddImagePart() member function of the AddImagePart() class always saves the image in the /media folder.

The code below shows how to insert an image into the /word/media folder using the following steps:

  • Create a PackagePart where the Uri path is set to /word/media .
  • Submit image data to part of the package.
  • Create a PackageReleationship for the image.
  • Use the PackageReleationship identifier to reference the image in the word document.

I copied the code for the AddImageToBody() function from this MSDN website.

 static void Main(string[] args) { InsertAPicture("mydoc.docx", "mypic.jpg"); } public static void InsertAPicture(string document, string fileName) { using (WordprocessingDocument wordprocessingDocument = WordprocessingDocument.Open(document, true)) { MainDocumentPart mainPart = wordprocessingDocument.MainDocumentPart; Uri imageUri = new Uri("/word/media/" + System.IO.Path.GetFileName(fileName), UriKind.Relative); // Create "image" part in /word/media // Change content type for other image types. PackagePart packageImagePart = wordprocessingDocument.Package.CreatePart(imageUri, "Image/jpeg"); // Feed data. byte[] imageBytes = File.ReadAllBytes(fileName); packageImagePart.GetStream().Write(imageBytes, 0, imageBytes.Length); PackagePart documentPackagePart = mainPart.OpenXmlPackage.Package.GetPart(new Uri("/word/document.xml", UriKind.Relative)); Console.Out.WriteLine(documentPackagePart.Uri); // URI to the image is relative to releationship document. PackageRelationship imageReleationshipPart = documentPackagePart.CreateRelationship( new Uri("media/" + System.IO.Path.GetFileName(fileName), UriKind.Relative), TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image"); AddImageToBody(wordprocessingDocument, imageReleationshipPart.Id); } } private static void AddImageToBody(WordprocessingDocument wordDoc, string relationshipId) { 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 = "New Bitmap Image.jpg" }, 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" }); wordDoc.MainDocumentPart.Document.Body.AppendChild( new DocumentFormat.OpenXml.Wordprocessing.Paragraph( new DocumentFormat.OpenXml.Wordprocessing.Run(element))); }

Of course, if you want to add other types of images (like PNG), you must change the type of content.

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Source: https://habr.com/ru/post/1500108/

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