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 /// <summary>
        /// 合并多個word文檔（合并到第一文件）
        /// </summary>
        /// <param name="as_word_paths">word文檔完整路徑</param>
        /// <param name="breakNewPage">true(默認(rèn)值)，合并下一個文檔前，自動換頁</param>
        /// <returns>無</returns> 
public void MergeWordFiles(string[] as_word_paths, bool breakNewPage = true)
        {
            var ls_first_word = as_word_paths.Length > 0 ? as_word_paths[0] : "";
            if (ls_first_word.fn_isempty())
            {
                return;
            }
            using (WordprocessingDocument doc = WordprocessingDocument.Open(ls_first_word, true))
            {
                var mainPart = doc.MainDocumentPart;
                for (var i = 1; i < as_word_paths.Length; i++)
                {
                   
                    var altChunkId = "cid_" + Guid.NewGuid().ToString().Replace("-", "");
                    var chunk = mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.WordprocessingML, altChunkId);
                    //mainPart.Document.Save();
                    using (FileStream fileStream = File.Open(as_word_paths[i], FileMode.Open))
                    {
                        chunk.FeedData(fileStream);
                    }
                    var altChunk = new DocumentFormat.OpenXml.Wordprocessing.AltChunk();
                    altChunk.Id = altChunkId;
                    //添加下一頁（下一個文檔合并此頁）
                    if (breakNewPage)
                    {
                        Paragraph newPage = new Paragraph(new Run
                         (new Break() { Type = BreakValues.Page }
                         ));
                        mainPart.Document.Append(newPage, altChunk);
                    }
                    else
                    {
                        mainPart.Document.Append(altChunk);
                    }
                    //mainPart.Document.Body.Append(altChunk);
                }
                //mainPart.Document.Body.InsertAfter(altChunk, mainPart.Document.Body.Elements<DocumentFormat.OpenXml.Wordprocessing.Paragraph>().Last());
                mainPart.Document.Save();
               
            }
        }

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