c# - 如何使用 OpenXml 2.0 将任何文件类型嵌入 Microsoft Word

Question

我花了很多时间试图找出一种使用 OpenXml 2.0 将任何文件嵌入 Microsoft Word 的好方法；Office 文档相当简单，但其他文件类型如 PDF、TXT、GIF、JPG、HTML 等呢？

在 C# 中，什么是让它适用于任何文件类型的好方法？

Answer 1

使用 OpenXml 2.0 将外部对象（PDF、TXT、GIF 等）嵌入 Microsoft Word（嗯，与 COM 合作）

我从这个网站得到了很多，所以在这里我提出并回答了我自己的问题，以便回馈一些我难以找到答案的话题，希望它对人们有所帮助。

有几个示例展示了如何使用 OpenXml 2.0 将 Office 文档嵌入到另一个 Office 文档中，其中不存在且易于理解的是如何将任何文件嵌入到 Office 文档中。

我从其他人的代码中学到了很多东西，所以这是我的贡献。由于我已经在使用 OpenXml 生成文档，并且需要将其他文件嵌入 Word，因此我决定使用 OpenXml 和 COM（Microsoft Office 2007 dll）的协作来实现我的目标。如果您像我一样，“调用 OLE 服务器应用程序来创建 IStorage”对您来说意义不大。

在这个例子中，我想展示我如何使用 COM 以编程方式获取附件的 OLE 二进制数据信息，以及我如何在我的 OpenXml 文档中使用该信息。基本上，我以编程方式查看 OpenXml 2.0 文档反射器以获取我需要的信息。

我下面的代码分为几个类，但这里是我正在做的事情的概要：

1. 创建一个 OpenXml WordProcessingDocument，获取要嵌入的文件的 System.IO.FileInfo
2. 创建一个自定义 OpenXmlEmbeddedObject 对象（这是保存所有二进制数据的对象）
3. 使用上述步骤中的二进制数据创建数据和图像流
4. 将这些流用作 OpenXml 文档的文件对象和文件图像

我知道有很多代码，没有太多解释......希望它很容易理解并能帮助人们 </p>

要求： • DocumentFormat.OpenXml dll (OpenXml 2.0) • WindowsBase dll • Microsoft.Office.Interop.Word dll（Office 2007 – 版本 12）

• 这是启动一切的主类，打开一个 WordProcessingDocument 和类以附加文件

using DocumentFormat.OpenXml.Packaging;
using System.IO;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Wordprocessing;

public class MyReport
{
    private MainDocumentPart _mainDocumentPart;

    public void CreateReport()
    {
        using (WordprocessingDocument wpDocument = WordprocessingDocument.Create(@"TempPath\MyReport.docx", WordprocessingDocumentType.Document))
        {
            _mainDocumentPart = wpDocument.AddMainDocumentPart();
            _mainDocumentPart.Document = new Document(new Body());

            AttachFile(@"MyFilePath\MyFile.pdf", true);
        }
    }

    private void AttachFile(string filePathAndName, bool displayAsIcon)
    {
        FileInfo fileInfo = new FileInfo(filePathAndName);

        OpenXmlHelper.AppendEmbeddedObject(_mainDocumentPart, fileInfo, displayAsIcon);
    }
}

• OpenXml 帮助类中的此类，包含将对象嵌入到 OpenXml 文件中的所有逻辑

using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Validation;
using DocumentFormat.OpenXml.Wordprocessing;
using OVML = DocumentFormat.OpenXml.Vml.Office;
using V = DocumentFormat.OpenXml.Vml;

public class OpenXmlHelper
{
    /// <summary>
    /// Appends an Embedded Object into the specified Main Document
    /// </summary>
    /// <param name="mainDocumentPart">The MainDocument Part of your OpenXml Word Doc</param>
    /// <param name="fileInfo">The FileInfo object associated with the file being embedded</param>
    /// <param name="displayAsIcon">Whether or not to display the embedded file as an Icon (Otherwise it will display a snapshot of the file)</param>
    public static void AppendEmbeddedObject(MainDocumentPart mainDocumentPart, FileInfo fileInfo, bool displayAsIcon)
    {
        OpenXmlEmbeddedObject openXmlEmbeddedObject = new OpenXmlEmbeddedObject(fileInfo, displayAsIcon);

        if (!String.IsNullOrEmpty(openXmlEmbeddedObject.OleObjectBinaryData))
        {
            using (Stream dataStream = new MemoryStream(Convert.FromBase64String(openXmlEmbeddedObject.OleObjectBinaryData)))
            {
                if (!String.IsNullOrEmpty(openXmlEmbeddedObject.OleImageBinaryData))
                {
                    using (Stream emfStream = new MemoryStream(Convert.FromBase64String(openXmlEmbeddedObject.OleImageBinaryData)))
                    {
                        string imagePartId = GetUniqueXmlItemID();
                        ImagePart imagePart = mainDocumentPart.AddImagePart(ImagePartType.Emf, imagePartId);

                        if (emfStream != null)
                        {
                            imagePart.FeedData(emfStream);
                        }

                        string embeddedPackagePartId = GetUniqueXmlItemID();

                        if (dataStream != null)
                        {
                            if (openXmlEmbeddedObject.ObjectIsOfficeDocument)
                            {
                                EmbeddedPackagePart embeddedObjectPart = mainDocumentPart.AddNewPart<EmbeddedPackagePart>(
                                    openXmlEmbeddedObject.FileContentType, embeddedPackagePartId);
                                embeddedObjectPart.FeedData(dataStream);
                            }
                            else
                            {
                                EmbeddedObjectPart embeddedObjectPart = mainDocumentPart.AddNewPart<EmbeddedObjectPart>(
                                    openXmlEmbeddedObject.FileContentType, embeddedPackagePartId);
                                embeddedObjectPart.FeedData(dataStream);
                            }
                        }

                        if (!displayAsIcon && !openXmlEmbeddedObject.ObjectIsPicture)
                        {
                            Paragraph attachmentHeader = CreateParagraph(String.Format("Attachment: {0} (Double-Click to Open)", fileInfo.Name));
                            mainDocumentPart.Document.Body.Append(attachmentHeader);
                        }

                        Paragraph embeddedObjectParagraph = GetEmbeededObjectParagraph(openXmlEmbeddedObject.FileType,
                            imagePartId, openXmlEmbeddedObject.OleImageStyle, embeddedPackagePartId);

                        mainDocumentPart.Document.Body.Append(embeddedObjectParagraph);
                    }
                }
            }
        }
    }

    /// <summary>
    /// Gets Paragraph that includes the embedded object
    /// </summary>
    private static Paragraph GetEmbeededObjectParagraph(string fileType, string imageID, string imageStyle, string embeddedPackageID)
    {
        EmbeddedObject embeddedObject = new EmbeddedObject();

        string shapeID = GetUniqueXmlItemID();
        V.Shape shape = new V.Shape() { Id = shapeID, Style = imageStyle };
        V.ImageData imageData = new V.ImageData() { Title = "", RelationshipId = imageID };

        shape.Append(imageData);
        OVML.OleObject oleObject = new OVML.OleObject()
        {
            Type = OVML.OleValues.Embed,
            ProgId = fileType,
            ShapeId = shapeID,
            DrawAspect = OVML.OleDrawAspectValues.Icon,
            ObjectId = GetUniqueXmlItemID(),
            Id = embeddedPackageID
        };

        embeddedObject.Append(shape);
        embeddedObject.Append(oleObject);

        Paragraph paragraphImage = new Paragraph();

        Run runImage = new Run(embeddedObject);
        paragraphImage.Append(runImage);

        return paragraphImage;
    }

    /// <summary>
    /// Gets a Unique ID for an XML Item, for reference purposes
    /// </summary>
    /// <returns>A GUID string with removed dashes</returns>
    public static string GetUniqueXmlItemID()
    {
        return "r" + System.Guid.NewGuid().ToString().Replace("-", "");
    }

    private static Paragraph CreateParagraph(string paragraphText)
    {
        Paragraph paragraph = new Paragraph();
        ParagraphProperties paragraphProperties = new ParagraphProperties();

        paragraphProperties.Append(new Justification()
        {
            Val = JustificationValues.Left
        });

        paragraphProperties.Append(new SpacingBetweenLines()
        {
            After = Convert.ToString(100),
            Line = Convert.ToString(100),
            LineRule = LineSpacingRuleValues.AtLeast
        });

        Run run = new Run();
        RunProperties runProperties = new RunProperties();

        Text text = new Text();

        if (!String.IsNullOrEmpty(paragraphText))
        {
            text.Text = paragraphText;
        }

        run.Append(runProperties);
        run.Append(text);

        paragraph.Append(paragraphProperties);
        paragraph.Append(run);

        return paragraph;
    }

}

• 这是此过程中最重要的部分，它使用 Microsoft 的内部 OLE 服务器，为文件创建二进制 DATA 和二进制 EMF 信息。您所要做的就是调用 OpenXmlEmbeddedObject 构造函数，然后一切都得到处理。它将模仿手动将任何文件拖入 Word 时的过程；执行此操作时会进行某种转换，将文件转换为 OLE 对象，以便 Microsoft 可以识别该文件。o 这个类最重要的部分是 OleObjectBinaryData 和 OleImageBinaryData 属性；它们包含文件数据和“.emf”图像的 64 位字符串二进制信息。o 如果您选择不将文件显示为图标，则“.emf”图像数据将创建文件的快照，例如 pdf 文件的第一页，

using System.Runtime.InteropServices;
using System.Xml;
using System.Diagnostics;
using System.IO;
using System.Drawing;
using Microsoft.Office.Interop.Word;

public class OpenXmlEmbeddedObject
{
    #region Constants

    private const string _defaultOleContentType = "application/vnd.openxmlformats-officedocument.oleObject";
    private const string _oleObjectDataTag = "application/vnd";
    private const string _oleImageDataTag = "image/x-emf";

    #endregion Constants

    #region Member Variables

    private static FileInfo _fileInfo;
    private static string _filePathAndName;
    private static bool _displayAsIcon;
    private static bool _objectIsPicture;

    private object _objectMissing = System.Reflection.Missing.Value;
    private object _objectFalse = false;
    private object _objectTrue = true;

    #endregion Member Variables

    #region Properties

    /// <summary>
    /// The File Type, as stored in Registry (Ex: a GIF Image = 'giffile')
    /// </summary>
    public string FileType
    {
        get
        {
            if (String.IsNullOrEmpty(_fileType) && _fileInfo != null)
            {
                _fileType = GetFileType(_fileInfo, false);
            }

            return _fileType;
        }
    }
    private string _fileType;

    /// <summary>
    /// The File Context Type, as storered in Registry (Ex: a GIF Image = 'image/gif')
    /// * Is converted into the 'Default Office Context Type' for non-office files
    /// </summary>
    public string FileContentType
    {
        get
        {
            if (String.IsNullOrEmpty(_fileContentType) && _fileInfo != null)
            {
                _fileContentType = GetFileContentType(_fileInfo);

                if (!_fileContentType.Contains("officedocument"))
                {
                    _fileContentType = _defaultOleContentType;
                }
            }

            return _fileContentType;
        }
    }
    private string _fileContentType;

    /// <summary>
    /// Gets the ContentType Text for the file
    /// </summary>
    public static string GetFileContentType(FileInfo fileInfo)
    {
        if (fileInfo == null)
        {
            throw new ArgumentNullException("fileInfo");
        }

        string mime = "application/octetstream";

        string ext = System.IO.Path.GetExtension(fileInfo.Name).ToLower(); 

        Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);

        if (rk != null && rk.GetValue("Content Type") != null)
        {
            mime = rk.GetValue("Content Type").ToString();
        }

        return mime;
    }

    public bool ObjectIsOfficeDocument
    {
        get { return FileContentType != _defaultOleContentType; }
    }

    public bool ObjectIsPicture
    {
        get { return _objectIsPicture; }
    }

    public string OleObjectBinaryData
    {
        get { return _oleObjectBinaryData; }
        set { _oleObjectBinaryData = value; }
    }
    private string _oleObjectBinaryData;

    public string OleImageBinaryData
    {
        get { return _oleImageBinaryData; }
        set { _oleImageBinaryData = value; }
    }
    private string _oleImageBinaryData;

    /// <summary>
    /// The OpenXml information for the Word Application that is created (Make-Shoft Code Reflector)
    /// </summary>
    public string WordOpenXml
    {
        get { return _wordOpenXml; }
        set { _wordOpenXml = value; }
    }
    private String _wordOpenXml;

    /// <summary>
    /// The XmlDocument that is created based on the OpenXml Data from WordOpenXml
    /// </summary>
    public XmlDocument OpenXmlDocument
    {
        get
        {
            if (_openXmlDocument == null && !String.IsNullOrEmpty(WordOpenXml))
            {
                _openXmlDocument = new XmlDocument();
                _openXmlDocument.LoadXml(WordOpenXml);
            }

            return _openXmlDocument;
        }
    }
    private XmlDocument _openXmlDocument;

    /// <summary>
    /// The XmlNodeList, for all Nodes containing 'binaryData'
    /// </summary>
    public XmlNodeList BinaryDataXmlNodesList
    {
        get
        {
            if (_binaryDataXmlNodesList == null && OpenXmlDocument != null)
            {
                _binaryDataXmlNodesList = OpenXmlDocument.GetElementsByTagName("pkg:binaryData");
            }

            return _binaryDataXmlNodesList;
        }
    }
    private XmlNodeList _binaryDataXmlNodesList;

    /// <summary>
    /// Icon Object for the file
    /// </summary>
    public Icon ObjectIcon
    {
        get
        {
            if (_objectIcon == null)
            {
                _objectIcon = Enterprise.Windows.Win32.Win32.GetLargeIcon(_filePathAndName);
            }

            return _objectIcon;
        }
    }
    private Icon _objectIcon;

    /// <summary>
    /// File Name for the Icon being created
    /// </summary>
    public string ObjectIconFile
    {
        get
        {
            if (String.IsNullOrEmpty(_objectIconFile))
            {
                _objectIconFile = String.Format("{0}.ico", _filePathAndName.Replace(".", ""));
            }

            return _objectIconFile;
        }
    }
    private string _objectIconFile;

    /// <summary>
    /// Gets the original height and width of the emf file being created
    /// </summary>
    public string OleImageStyle
    {
        get
        {
            if (String.IsNullOrEmpty(_oleImageStyle) && !String.IsNullOrEmpty(WordOpenXml))
            {
                XmlNodeList xmlNodeList = OpenXmlDocument.GetElementsByTagName("v:shape");
                if (xmlNodeList != null && xmlNodeList.Count > 0)
                {
                    foreach (XmlAttribute attribute in xmlNodeList[0].Attributes)
                    {
                        if (attribute.Name == "style")
                        {
                            _oleImageStyle = attribute.Value;
                        }
                    }
                }
            }

            return _oleImageStyle;
        }

        set { _oleImageStyle = value; }
    }
    private string _oleImageStyle;

    #endregion Properties

    #region Constructor

    /// <summary>
    /// Generates binary information for the file being passed in
    /// </summary>
    /// <param name="fileInfo">The FileInfo object for the file to be embedded</param>
    /// <param name="displayAsIcon">Whether or not to display the file as an Icon (Otherwise it will show a snapshot view of the file)</param>
    public OpenXmlEmbeddedObject(FileInfo fileInfo, bool displayAsIcon)
    {
        _fileInfo = fileInfo;
        _filePathAndName = fileInfo.ToString();
        _displayAsIcon = displayAsIcon;

        SetupOleFileInformation();
    }

    #endregion Constructor

    #region Methods

    /// <summary>
    /// Creates a temporary Word App in order to add an OLE Object, get's the OpenXML data from the file (similar to the Code Reflector info)
    /// </summary>
    private void SetupOleFileInformation()
    {
        Microsoft.Office.Interop.Word.Application wordApplication = new Microsoft.Office.Interop.Word.Application();

        Microsoft.Office.Interop.Word.Document wordDocument = wordApplication.Documents.Add(ref _objectMissing, ref _objectMissing,
            ref _objectMissing, ref _objectMissing);

        object iconObjectFileName = _objectMissing;
        object objectClassType = FileType;
        object objectFilename = _fileInfo.ToString();

        Microsoft.Office.Interop.Word.InlineShape inlineShape = null;

        if (_displayAsIcon)
        {
            if (ObjectIcon != null)
            {
                using (FileStream iconStream = new FileStream(ObjectIconFile, FileMode.Create))
                {
                    ObjectIcon.Save(iconStream);
                    iconObjectFileName = ObjectIconFile;
                }
            }

            object objectIconLabel = _fileInfo.Name;

            inlineShape = wordDocument.InlineShapes.AddOLEObject(ref objectClassType,
                ref objectFilename, ref _objectFalse, ref _objectTrue, ref iconObjectFileName,
                ref _objectMissing, ref objectIconLabel, ref _objectMissing);
        }
        else
        {
            try
            {
                Image image = Image.FromFile(_fileInfo.ToString());
                _objectIsPicture = true;
                OleImageStyle = String.Format("height:{0}pt;width:{1}pt", image.Height, image.Width);

                wordDocument.InlineShapes.AddPicture(_fileInfo.ToString(), ref _objectMissing, ref _objectTrue, ref _objectMissing);
            }
            catch
            {
                inlineShape = wordDocument.InlineShapes.AddOLEObject(ref objectClassType,
                    ref objectFilename, ref _objectFalse, ref _objectFalse, ref _objectMissing, ref _objectMissing,
                    ref _objectMissing, ref _objectMissing);
            }
        }

        WordOpenXml = wordDocument.Range(ref _objectMissing, ref _objectMissing).WordOpenXML;

        if (_objectIsPicture)
        {
            OleObjectBinaryData = GetPictureBinaryData();
            OleImageBinaryData = GetPictureBinaryData();
        }
        else
        {
            OleObjectBinaryData = GetOleBinaryData(_oleObjectDataTag);
            OleImageBinaryData = GetOleBinaryData(_oleImageDataTag);
        }

        // Not sure why, but Excel seems to hang in the processes if you attach an Excel file…
        // This kills the excel process that has been started < 15 seconds ago (so not to kill the user's other Excel processes that may be open)
        if (FileType.StartsWith("Excel"))
        {
            Process[] processes = Process.GetProcessesByName("EXCEL");
            foreach (Process process in processes)
            {
                if (DateTime.Now.Subtract(process.StartTime).Seconds <= 15)
                {
                    process.Kill();
                    break;
                }
            }
        }

        wordDocument.Close(ref _objectFalse, ref _objectMissing, ref _objectMissing);
        wordApplication.Quit(ref _objectMissing, ref _objectMissing, ref _objectMissing);
    }

    /// <summary>
    /// Gets the binary data from the Xml File that is associated with the Tag passed in
    /// </summary>
    /// <param name="binaryDataXmlTag">the Tag to look for in the OpenXml</param>
    /// <returns></returns>
    private string GetOleBinaryData(string binaryDataXmlTag)
    {
        string binaryData = null;
        if (BinaryDataXmlNodesList != null)
        {
            foreach (XmlNode xmlNode in BinaryDataXmlNodesList)
            {
                if (xmlNode.ParentNode != null)
                {
                    foreach (XmlAttribute attr in xmlNode.ParentNode.Attributes)
                    {
                        if (String.IsNullOrEmpty(binaryData) && attr.Value.Contains(binaryDataXmlTag))
                        {
                            binaryData = xmlNode.InnerText;
                            break;
                        }
                    }
                }
            }
        }

        return binaryData;
    }

    /// <summary>
    /// Gets the image Binary data, if the file is an image
    /// </summary>
    /// <returns></returns>
    private string GetPictureBinaryData()
    {
        string binaryData = null;
        if (BinaryDataXmlNodesList != null)
        {
            foreach (XmlNode xmlNode in BinaryDataXmlNodesList)
            {
                binaryData = xmlNode.InnerText;
                break;
            }
        }

        return binaryData;
    }

    /// <summary>
    /// Gets the file type description ("Application", "Text Document", etc.) for the file.
    /// </summary>
    /// <param name="fileInfo">FileInfo containing extention</param>
    /// <returns>Type Description</returns>
    public static string GetFileType(FileInfo fileInfo, bool returnDescription)
    {
        if (fileInfo == null)
        {
            throw new ArgumentNullException("fileInfo");
        }

        string description = "File";
        if (string.IsNullOrEmpty(fileInfo.Extension))
        {
            return description;
        }
        description = string.Format("{0} File", fileInfo.Extension.Substring(1).ToUpper());
        RegistryKey typeKey = Registry.ClassesRoot.OpenSubKey(fileInfo.Extension);
        if (typeKey == null)
        {
            return description;
        }
        string type = Convert.ToString(typeKey.GetValue(string.Empty));
        RegistryKey key = Registry.ClassesRoot.OpenSubKey(type);
        if (key == null)
        {
            return description;
        }

        if (returnDescription)
        {
            description = Convert.ToString(key.GetValue(string.Empty));
            return description;
        }
        else
        {
            return type;
        }
    }

    #endregion Methods
}

Answer 2

 _objectIcon = Enterprise.Windows.Win32.Win32.GetLargeIcon(_filePathAndName); 

好像坏了，但是

_objectIcon = System.Drawing.Icon.ExtractAssociatedIcon(_filePathAndName);

也应该工作。

Answer 3

我在这里的回答将告诉您如何执行此操作，但不会向您展示 SDK 或特定语言。

Answer 4

这是一个很好的答案，对我帮助很大，但是用户 bic 提到的潜在错误也存在

在

OpenXmlEmbeddedObject(FileInfo fileInfo, bool displayAsIcon)

在第 242 行，

_filePathAndName = fileInfo.ToString();

在

SetupOleFileInformation()

在第 264 行，

 object objectFilename = _fileInfo.ToString();

第 289 行，以及

Image image = Image.FromFile(_fileInfo.ToString());

第 293 行

wordDocument.InlineShapes.AddPicture(_fileInfo.toString(), ref _objectMissing, ref _objectTrue, ref _objectMissing);

如果代码也应该使用相对路径，那么所有这些都需要是“FullName”而不是“ToString()”。希望这可以帮助任何想要使用 D Lyonnais 代码的人！

Answer 5

制作一份文档副本，然后使用 Open XML SDK Tool 2.5 for Microsoft Office 编写代码。这个工具反映了代码。您可以简单地复制粘贴。