Word 2007 Document Processing Using OpenXML

One interesting topic is how to handle Word documents using code. I did a test to export the page content from a page in publishing site's Pages library to a Word 2007 document, and save it to a separate document library with success.

Code:

   /// <summary>
   /// Export publishing page's content to Word 2007 document controls
   /// Exported documents stored in a separate document library
   /// </summary>
   /// <param name="sourceItem">A list item from Pages' library</param>
   /// <param name="targetList">A document library saves exported Word 2007 documents</param>
   public static void ExportPubPageContentToWordDoc(SPListItem sourceItem, SPList targetList)
   {
       SPDocumentLibrary lib = targetList as SPDocumentLibrary;
       if (lib == null)
       {
           throw new Exception("Target list is not a Document Library type");
       }

       foreach (SPContentType ctype in lib.ContentTypes)
       {
           if (ctype.Name.ToLower() != "document" && ctype.Name.ToLower() != "folder")
           {
               SPFile tempFile = ctype.ResourceFolder.Files[ctype.DocumentTemplate];
               using (Stream fileStream = tempFile.OpenBinaryStream())
               {
                   BinaryReader reader = new BinaryReader(fileStream);
                   MemoryStream memString = new MemoryStream();
                   BinaryWriter writer = new BinaryWriter(memString);
                   writer.Write(reader.ReadBytes((int)fileStream.Length));
                   writer.Flush();
                   reader.Close();

                   using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(memString, true))
                   {
                       MainDocumentPart mainPart = wordDoc.MainDocumentPart;
                       IEnumerator<CustomXmlPart> xmlPartEnumerator = mainPart.CustomXmlParts.GetEnumerator();
                       xmlPartEnumerator.MoveNext();
                       CustomXmlPart XMLPart = xmlPartEnumerator.Current;

                       // Create an XML document that matches our structure
                       XmlDocument doc = new XmlDocument();

                       // Create some nodes
                       XmlElement rootNode = doc.CreateElement("propertydata");
                       XmlElement titleNode = doc.CreateElement("title");
                       XmlElement body = doc.CreateElement("body");

                       titleNode.InnerText = GetFieldValueString(sourceItem, "Title");
                       rootNode.AppendChild(titleNode);
                       doc.AppendChild(rootNode);

                       body.InnerText = GetFieldValueString(sourceItem, "Article Body");
                       rootNode.AppendChild(body);
                       doc.AppendChild(rootNode);

                       MemoryStream resultStream = new MemoryStream();
                       doc.Save(resultStream);
                       resultStream.Flush();
                       resultStream.Position = 0;
                       XMLPart.FeedData(resultStream);

                       string fileName = sourceItem.File.Name;
                       if (fileName.IndexOf('.') > 0)
                           fileName = fileName.Substring(0, fileName.LastIndexOf('.'));
                       fileName += ".docx";
                       string docUrl = lib.RootFolder.Url + "/" + fileName;
                       SPFile newDoc = lib.RootFolder.Files.Add(docUrl, memString, true);
                       lib.Update();
                   }
               }
           }
       }
   }

OpenXML SKD 2.0 (http://www.microsoft.com/downloads/details.aspx?FamilyId=C6E744E5-36E9-45F5-8D8C-331DF206E0D0&displaylang=en) is required to run above code. Word 2007 Content Control tool-kit (http://dbe.codeplex.com/) is handy to manipulate Word 2007 documents'XML, and I used it to create the document library template file.

Good references on this topic:
http://blogs.msdn.com/mikeormond/archive/2008/06/20/word-2007-content-controls-databinding-and-schema-validation.aspx
http://www.craigmurphy.com/blog/?p=913
http://www.microsoft.com/uk/msdn/screencasts/screencast/236/Word-2007-Content-Controls-and-Schema-Validation.aspx