使用OpenXML在PPTX中插入圖像不起作用

Question

我正嘗試使用OpenXML生成包含圖像的PowerPoint文件。不幸的是它不起作用。圖像未被顯示。我檢查了使用OpenXML生產力工具生成的文件，並分別解壓縮文件內容。該文件本身包含/ppt/media/image.png中的圖像，並且應該顯示在第二張幻燈片中。

這裏是我的代碼：

private void InsertSlide(string chartString, int position, string title, string text = "") 
{ 
    if (m_presentation == null || title == null || m_presentation.PresentationPart == null) 
     return; 

    var slide = new Slide(new CommonSlideData(new ShapeTree())); 
    var nonVisualProperties = 
     slide.CommonSlideData.ShapeTree.AppendChild(new NonVisualGroupShapeProperties()); 
     nonVisualProperties.NonVisualDrawingProperties = new NonVisualDrawingProperties { Id = 1, Name = "" }; 
     nonVisualProperties.NonVisualGroupShapeDrawingProperties = new NonVisualGroupShapeDrawingProperties(); 
     nonVisualProperties.ApplicationNonVisualDrawingProperties = new ApplicationNonVisualDrawingProperties(); 
     slide.CommonSlideData.ShapeTree.AppendChild(new GroupShapeProperties()); 


    var slidePart = m_presentation.PresentationPart.AddNewPart<SlidePart>(); 
    var imagePart = slidePart.AddImagePart(ImagePartType.Png, "irgendeinscheiss"); 

    //var imageStream = new MemoryStream(Convert.FromBase64String(chartString)); 
    using (var imageStream = new FileStream(@"C:\Users\DA\Desktop\Charts\1_Chart2_01.png", FileMode.Open)) 
    { 
     imageStream.Position = 0; 
     imagePart.FeedData(imageStream); 
    } 

    slide.Save(slidePart); 

    var slideIdList = m_presentation.PresentationPart.Presentation.SlideIdList; 
    uint maxSlideId = 1; 
    SlideId prevSlideId = null; 
    foreach (SlideId slideId in slideIdList.ChildElements) 
    { 
     if (slideId.Id > maxSlideId) 
      maxSlideId = slideId.Id; 
     position--; 

     if (position == 0) 
      prevSlideId = slideId; 
    } 

    maxSlideId++; 
    SlidePart lastSlidePart; 

    if (prevSlideId != null) 
      lastSlidePart = (SlidePart)m_presentation.PresentationPart.GetPartById(prevSlideId.RelationshipId); 
    else 
      lastSlidePart = (SlidePart)m_presentation.PresentationPart.GetPartById(((SlideId)(slideIdList.ChildElements[0])).RelationshipId); 

    if (lastSlidePart.SlideLayoutPart != null) 
     slidePart.AddPart(lastSlidePart.SlideLayoutPart); 

    var newSlideId = slideIdList.InsertAfter(new SlideId(), prevSlideId); 
    newSlideId.Id = maxSlideId; 
    newSlideId.RelationshipId = m_presentation.PresentationPart.GetIdOfPart(slidePart); 
    m_presentation.PresentationPart.Presentation.Save(); 
} 

我這麼想嗎？也許關係？在查看了232243000個不同的例子之後，我仍然停留在這一點上。謝謝！

Answer 1

我認爲你需要將圖像添加到slide.CommonSlideData

public Slide InsertSlide(PresentationPart presentationPart, string layoutName) 
    { 
     UInt32 slideId = 256U; 


     // Get the Slide Id collection of the presentation document 
     var slideIdList = presentationPart.Presentation.SlideIdList; 


     if (slideIdList == null) 
     { 
      throw new NullReferenceException("The number of slide is empty, please select a ppt with a slide at least again"); 
     } 


     slideId += Convert.ToUInt32(slideIdList.Count()); 


     // Creates an Slide instance and adds its children. 
     Slide slide = new Slide(new CommonSlideData(new ShapeTree())); 


     SlidePart slidePart = presentationPart.AddNewPart<SlidePart>(); 
     slide.Save(slidePart); 

     // Get SlideMasterPart and SlideLayoutPart from the existing Presentation Part 
     SlideMasterPart slideMasterPart = presentationPart.SlideMasterParts.First(); 
     SlideLayoutPart slideLayoutPart = slideMasterPart.SlideLayoutParts.SingleOrDefault 
      (sl => sl.SlideLayout.CommonSlideData.Name.Value.Equals(layoutName, StringComparison.OrdinalIgnoreCase)); 
     if (slideLayoutPart == null) 
     { 
      throw new Exception("The slide layout " + layoutName + " is not found"); 
     } 


     slidePart.AddPart<SlideLayoutPart>(slideLayoutPart); 


     slidePart.Slide.CommonSlideData = (CommonSlideData)slideMasterPart.SlideLayoutParts.SingleOrDefault( 
      sl => sl.SlideLayout.CommonSlideData.Name.Value.Equals(layoutName)).SlideLayout.CommonSlideData.Clone(); 


     // Create SlideId instance and Set property 
     SlideId newSlideId = presentationPart.Presentation.SlideIdList.AppendChild<SlideId>(new SlideId()); 
     newSlideId.Id = slideId; 
     newSlideId.RelationshipId = presentationPart.GetIdOfPart(slidePart); 


     return GetSlideByRelationShipId(presentationPart, newSlideId.RelationshipId); 
    } 

    /// <summary> 
    /// Get Slide By RelationShip ID 
    /// </summary> 
    /// <param name="presentationPart">Presentation Part</param> 
    /// <param name="relationshipId">Relationship ID</param> 
    /// <returns>Slide Object</returns> 
    private static Slide GetSlideByRelationShipId(PresentationPart presentationPart, StringValue relationshipId) 
    { 
     // Get Slide object by Relationship ID 
     SlidePart slidePart = presentationPart.GetPartById(relationshipId) as SlidePart; 
     if (slidePart != null) 
     { 
      return slidePart.Slide; 
     } 
     else 
     { 
      return null; 
     } 
    } 

Public void InsertImageInLastSlide(Slide slide, string imagePath, string imageExt) 
{ 
    // Creates an Picture instance and adds its children. 
    P.Picture picture = new P.Picture(); 
    string embedId = string.Empty; 
    embedId = "rId" + (slide.Elements().Count() + 915).ToString(); 
    P.NonVisualPictureProperties nonVisualPictureProperties = new P.NonVisualPictureProperties( 
     new P.NonVisualDrawingProperties() { Id = (UInt32Value)4U, Name = "Picture 5" }, 
     new P.NonVisualPictureDrawingProperties(new A.PictureLocks() { NoChangeAspect = true }), 
     new ApplicationNonVisualDrawingProperties()); 


    P.BlipFill blipFill = new P.BlipFill(); 
    Blip blip = new Blip() { Embed = embedId }; 


    // Creates an BlipExtensionList instance and adds its children 
    BlipExtensionList blipExtensionList = new BlipExtensionList(); 
    BlipExtension blipExtension = new BlipExtension() { Uri = "{28A0092B-C50C-407E-A947-70E740481C1C}" }; 


    UseLocalDpi useLocalDpi = new UseLocalDpi() { Val = false }; 
    useLocalDpi.AddNamespaceDeclaration("a14", 
     "http://schemas.microsoft.com/office/drawing/2010/main"); 


    blipExtension.Append(useLocalDpi); 
    blipExtensionList.Append(blipExtension); 
    blip.Append(blipExtensionList); 


    Stretch stretch = new Stretch(); 
    FillRectangle fillRectangle = new FillRectangle(); 
    stretch.Append(fillRectangle); 


    blipFill.Append(blip); 
    blipFill.Append(stretch); 


    // Creates an ShapeProperties instance and adds its children. 
    P.ShapeProperties shapeProperties = new P.ShapeProperties(); 


    A.Transform2D transform2D = new A.Transform2D(); 
    A.Offset offset = new A.Offset() { X = 457200L, Y = 1524000L }; 
    A.Extents extents = new A.Extents() { Cx = 8229600L, Cy = 5029200L }; 


    transform2D.Append(offset); 
    transform2D.Append(extents); 


    A.PresetGeometry presetGeometry = new A.PresetGeometry() { Preset = A.ShapeTypeValues.Rectangle }; 
    A.AdjustValueList adjustValueList = new A.AdjustValueList(); 


    presetGeometry.Append(adjustValueList); 


    shapeProperties.Append(transform2D); 
    shapeProperties.Append(presetGeometry); 


    picture.Append(nonVisualPictureProperties); 
    picture.Append(blipFill); 
    picture.Append(shapeProperties); 


    slide.CommonSlideData.ShapeTree.AppendChild(picture); 


    // Generates content of imagePart. 
    ImagePart imagePart = slide.SlidePart.AddNewPart<ImagePart>(imageExt, embedId); 
    FileStream fileStream = new FileStream(imagePath, FileMode.Open); 
    imagePart.FeedData(fileStream); 
    fileStream.Close(); 
} 

Source Code