protected void createQuestion(object sender, EventArgs e)
    {
        ILog logger = LogManager.GetLogger(typeof(Question));

        using (FileStream stream = File.OpenRead("d://000/hhyq.docx"))
        {
            XWPFDocument    docx = new XWPFDocument(stream);
            string[]        strs = new string[7];
            Regex           regA = new Regex("^[ABCDabcd]{1}.|、", RegexOptions.IgnoreCase);          //以A|B|C|D开头  选项
            Regex           regNO = new Regex("^[0-9]+.|、", RegexOptions.IgnoreCase);                //以数字开头  题干
            Regex           regChapter = new Regex("^第[一二三四五六七八九十]{1,3}章", RegexOptions.IgnoreCase); //章节标题
            Regex           regnode = new Regex("^第[一二三四五六七八九十]{1,3}节", RegexOptions.IgnoreCase);
            Chapter         chapter = null, node = null;
            ChapterManager  chaptermanager = new ChapterManager();
            Question        question       = null;
            QuestionManager questonmanager = new QuestionManager();
            foreach (var para in docx.Paragraphs)
            {
                string text = para.ParagraphText.Trim();
                if (!string.IsNullOrWhiteSpace(text) && !string.IsNullOrEmpty(text))//非空
                {
                    if (regChapter.IsMatch(text))
                    {
                        chapter                 = new Chapter();
                        chapter.TextBookId      = 1;
                        chapter.IsVerified      = true;
                        chapter.ChapterDeep     = 0;
                        chapter.ChapterName     = regChapter.Replace(text, "").Trim();
                        chapter.ChapterParentNo = 0;
                        chapter.ChapterRemark   = chapter.ChapterName;
                        chaptermanager          = new ChapterManager();
                        chapter.ChapterId       = chaptermanager.Add(chapter);
                    }
                    else if (regnode.IsMatch(text))
                    {
                        node                 = new Chapter();
                        node.ChapterName     = regnode.Replace(text, "").Trim();
                        node.ChapterParentNo = chapter.ChapterId;
                        node.ChapterDeep     = 1;
                        node.ChapterRemark   = node.ChapterName;
                        node.TextBookId      = 1;
                        node.IsVerified      = true;
                        node.ChapterId       = chaptermanager.Add(node);
                    }
                    else
                    {
                        string[] paratext = text.Split(new string[] { "A.", "B.", "C.", "D." }, StringSplitOptions.RemoveEmptyEntries);
                        question            = StringsTOQuestion(paratext, "D");
                        question.QuestionId = questonmanager.Add(question);
                        Console.WriteLine(question.QuestionId + "  添加成功。");
                    }
                }
                System.Threading.Thread.Sleep(300);
            }
        }
    }
        public async Task <bool> AddChapter(Chapter chapter, byte[]?content)
        {
            await using var transaction = await _context.Database.BeginTransactionAsync();

            if (!await _chapterManager.Add(chapter))
            {
                await transaction.RollbackAsync();

                return(false);
            }

            await ProcessContent(chapter, content);

            await transaction.CommitAsync();

            return(true);
        }