public void Apply(OleObject ole)
{
_writer.WriteStartElement("o", "OLEObject", OpenXmlNamespaces.Office);
EmbeddedObjectPart.ObjectType type;
if (ole.ClipboardFormat == "Biff8")
{
type = EmbeddedObjectPart.ObjectType.Excel;
}
else if (ole.ClipboardFormat == "MSWordDoc")
{
type = EmbeddedObjectPart.ObjectType.Word;
}
else if (ole.ClipboardFormat == "MSPresentation")
{
type = EmbeddedObjectPart.ObjectType.Powerpoint;
}
else
{
type = EmbeddedObjectPart.ObjectType.Other;
}
//type
if (ole.fLinked)
{
Uri link = new Uri(ole.Link);
ExternalRelationship rel = _targetPart.AddExternalRelationship(OpenXmlRelationshipTypes.OleObject, link);
_writer.WriteAttributeString("r", "id", OpenXmlNamespaces.Relationships, rel.Id);
_writer.WriteAttributeString("Type", "Link");
_writer.WriteAttributeString("UpdateMode", ole.UpdateMode.ToString());
}
else
{
EmbeddedObjectPart part = _targetPart.AddEmbeddedObjectPart(type);
_writer.WriteAttributeString("r", "id", OpenXmlNamespaces.Relationships, part.RelIdToString);
_writer.WriteAttributeString("Type", "Embed");
//copy the object
copyEmbeddedObject(ole, part);
}
//ProgID
_writer.WriteAttributeString("ProgID", ole.Program);
//ShapeId
_writer.WriteAttributeString("ShapeID", _pict.ShapeContainer.GetHashCode().ToString());
//DrawAspect
_writer.WriteAttributeString("DrawAspect", "Content");
//ObjectID
_writer.WriteAttributeString("ObjectID", ole.ObjectId);
_writer.WriteEndElement();
}
/// <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 = OpenXmlWordHelper.GetUniqueXmlItemID();
ImagePart imagePart = mainDocumentPart.AddImagePart(ImagePartType.Emf, imagePartId);
if (emfStream != null)
{
imagePart.FeedData(emfStream);
}
string embeddedPackagePartId = OpenXmlWordHelper.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 = OpenXmlWordHelper.CreateParagraph(JustificationValues.Left,
OpenXmlWordHelper.ParagraphSpacing.AfterMedium, null, true, false,
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>
/// Writes the embedded OLE object from the ObjectPool of the binary file to the OpenXml Package.
/// </summary>
/// <param name="ole"></param>
private void copyEmbeddedObject(OleObject ole, EmbeddedObjectPart part)
{
//create a new storage
StructuredStorageWriter writer = new StructuredStorageWriter();
// Word will not open embedded charts if a CLSID is set.
if (ole.Program.StartsWith("Excel.Chart") == false)
{
writer.RootDirectoryEntry.setClsId(ole.ClassId);
}
//copy the OLE streams from the old storage to the new storage
foreach (string oleStream in ole.Streams.Keys)
{
writer.RootDirectoryEntry.AddStreamDirectoryEntry(oleStream, ole.Streams[oleStream]);
}
//write the storage to the xml part
writer.write(part.GetStream());
}
private static void ExtractFile(EmbeddedObjectPart part, string destinationFolderPath)
{
// Determine the file name and destination path of the binary,
// structured storage file.
string binaryFileName = Path.GetFileName(part.Uri.ToString());
string binaryFilePath = Path.Combine(destinationFolderPath, binaryFileName);
// Ensure the destination directory exists.
Directory.CreateDirectory(destinationFolderPath);
// Copy part contents to structured storage file.
using (Stream partStream = part.GetStream())
using (FileStream fileStream = File.Create(binaryFilePath))
{
partStream.CopyTo(fileStream);
}
// Extract the embedded file from the structured storage file.
Ole10Native.ExtractFile(binaryFilePath, destinationFolderPath);
// Remove the structured storage file.
File.Delete(binaryFilePath);
}
