Question

在Word文档中，插入图像对话框中有一个选项插入按钮，即“链接到文件”，我可以在其中输入图像URL链接到文件名输入框。然后，Word将从链接中提取该图像。

如何使用OpenXML翻译该功能？我目前正在使用OpenXml SDK 2.0。我的程序假设将word文档作为输入，并使用Link to File方法

添加图像

Answer 1

添加链接的方式与添加图像的方式之间的唯一区别在于构建关系。图像的显示部分是相同的。为了添加图像关系，你需要这样的东西：

    //This isn't necessery if you know the Part Type (e.g. MainDocumentPart.AddImagePart())
    private static ImagePart CreateImagePart(OpenXmlPart container, string contentType)
    {
        var method = container.GetType().GetMethod("AddImagePart", new Type[] { typeof(string) });
        if (method == null)
            throw new Exception("Can't add an image to type: " + container.GetType().Name);
        return (ImagePart)method.Invoke(container, new object[] { contentType });
    }

    private static string AddImageToDocument(OpenXmlPart part, string imageSource, string contentType, bool addAsLink)
    {
        if (addAsLink)
        {
            ImagePart imagePart = CreateImagePart(part, contentType);
            string id = part.GetIdOfPart(imagePart);
            part.DeletePart(imagePart);
            part.AddExternalRelationship(imagePart.RelationshipType, new Uri(imageSource, UriKind.Absolute), id);
            return id;
        }
        else
        {
            ImagePart imagePart = CreateImagePart(part, contentType);
            using (Stream imageStream = File.Open(imageSource, FileMode.Open))
            {
                imagePart.FeedData(imageStream);
            }

            return part.GetIdOfPart(imagePart);
        }
    }

将图像添加到文档后，可以使用参考显示图像

类似......

    private static OpenXmlElement CreateImageContainer(OpenXmlPart part, string relationshipId, string imageName, int widthPixels, int heightPixels)
    {
        long widthEMU = (widthPixels * 914400L) / 96L;
        long heightEMU = (heightPixels * 914400L) / 96L;
        var element =
                    new Paragraph(
                        new Run(
                            new RunProperties(
                                new NoProof()),
                            new Drawing(
                                new wp.Inline(
                                    new wp.Extent() { Cx = widthEMU, Cy = heightEMU },
                                    new wp.DocProperties() { Id = (UInt32Value)1U, Name = "Picture 0", Description = imageName },
                                    new wp.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 = imageName },
                                                    new pic.NonVisualPictureDrawingProperties()),
                                                new pic.BlipFill(
                                                    new a.Blip() { Embed = relationshipId },
                                                    new a.Stretch(
                                                        new a.FillRectangle())),
                                                new pic.ShapeProperties(
                                                    new a.Transform2D(
                                                        new a.Offset() { X = 0L, Y = 0L },
                                                        new a.Extents() { Cx = widthEMU, Cy = heightEMU }),
                                                    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 }))
                    );
        return element;
    }

请注意，我在网上找到了这个（CreateImageContainer）的最后一部分，并调整/重命名/重构以适用于我的示例并包含一个问题，DocProperties Id和Name以及NonVisualDrawingProperties Id在整个部分中都必须是唯一的。（您不能以当前形式调用此方法两次）

OpenXML插入图像作为文件链接到word文档

1 个答案: