Merge word documents using OPEN XML SDK

Merge word documents using OPEN XML SDK

  public XNamespace w = "http://schemas.openxmlformats.org/wordprocessingml/2006/main";

        public XNamespace r = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";

#region Merge documents

        private void MergeDoc(string MainDoc, string Annexure)

        {

            try

            {

                AppendPageBreak(Annexure);

                using (WordprocessingDocument myDoc = WordprocessingDocument.Open(MainDoc, true))

                {

                    string altChunkId = GetUniqueXmlItemID();

                    MainDocumentPart mainPart = myDoc.MainDocumentPart;

                    AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart(

                        AlternativeFormatImportPartType.WordprocessingML,

                        //"application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml",

                      altChunkId);

                    using (FileStream fileStream =

                        File.Open(Annexure, FileMode.Open))

                        chunk.FeedData(fileStream);

                    XElement altChunk = new XElement(w + "altChunk",

                        new XAttribute(r + "id", altChunkId)

                    );

                    XDocument mainDocumentXDoc = GetXDocument(myDoc);

                    // Add the altChunk element after the last paragraph.

                    mainDocumentXDoc.Root

                        .Element(w + "body")

                        .Elements(w + "p")

                        .Last()

                        .AddAfterSelf(altChunk);

                    SaveXDocument(myDoc, mainDocumentXDoc);

                }

            }

            catch (Exception ex)

            {

                ULSLogService.DisplayError(this.GetType().Name + "." + MethodBase.GetCurrentMethod().Name, ex);

            }

        }

        private void AppendPageBreak(string sourceDoc)

        {

            try

            {

                using (WordprocessingDocument myDoc = WordprocessingDocument.Open(sourceDoc, true))

                {

                    RevisionAccepter.AcceptRevisions(myDoc);

                    //   AppendPageBreak(myDoc);

                    //

                    Body body = myDoc.MainDocumentPart.Document.Body;

                    Paragraph para = new Paragraph();

                    Run run = para.AppendChild(new Run());

                    run.AppendChild(new Text(""));

                    if (para.ParagraphProperties == null)

                    {

                        para.ParagraphProperties = new ParagraphProperties();

                    }

                    para.ParagraphProperties.PageBreakBefore = new PageBreakBefore();

                    body.InsertBeforeSelf(para);

                    //body.AppendChild(p);

                    //

                }

            }

            catch (Exception ex)

            {

                ULSLogService.DisplayError(this.GetType().Name + "." + MethodBase.GetCurrentMethod().Name, ex);

            }

        }

        private void SaveXDocument(WordprocessingDocument myDoc,

       XDocument mainDocumentXDoc)

        {

            try

            {

                // Serialize the XDocument back into the part

                using (Stream str = myDoc.MainDocumentPart.GetStream(

                    FileMode.Create, FileAccess.Write))

                using (XmlWriter xw = XmlWriter.Create(str))

                    mainDocumentXDoc.Save(xw);

            }

            catch (Exception ex)

            {

                ULSLogService.DisplayError(this.GetType().Name + "." + MethodBase.GetCurrentMethod().Name, ex);

            }

        }

        private XDocument GetXDocument(WordprocessingDocument myDoc)

        {

            XDocument mainDocumentXDoc = null;

            try

            {

                // Load the main document part into an XDocument          

                using (Stream str = myDoc.MainDocumentPart.GetStream())

                using (XmlReader xr = XmlReader.Create(str))

                    mainDocumentXDoc = XDocument.Load(xr);

            }

            catch (Exception ex)

            {

                ULSLogService.DisplayError(this.GetType().Name + "." + MethodBase.GetCurrentMethod().Name, ex);

            }

            return mainDocumentXDoc;

        }

        #endregion