public async Task <ActionResult> AddExport()
        {
            var file = Request.Files[0];

            if (file.ContentType != "application/vnd.ms-excel" && file.ContentType != "application/x-xls")
            {
                return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请上传.xlsx文件或者.xls文件" }), "text/html"));
            }

            var excel = new Controls.ExcelHelper(file.InputStream, file.FileName);
            var dt    = excel.ExcelToDataTable("问答题库", true);

            if (dt != null && dt?.Rows?.Count > 0)
            {
                if (dt.Columns.Count != 8)
                {
                    return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请确认文档的列是否只有【编码】【标签】【题目】【选项A】【选项B】【选项B】【选项C】【选项D】【正确选项】这几列" }), "text/html"));
                }

                RepositoryManager manager = new RepositoryManager();
                using (var db = manager.BeginTrans())
                {
                    foreach (DataRow dr in dt.Rows)
                    {
                        if (string.IsNullOrWhiteSpace(dr[2].ToString().Trim()))//过滤 答题  为空的 行
                        {
                            continue;
                        }
                        AnswerInfoListEntity entity = new AnswerInfoListEntity()
                        {
                            Tip                = dr[1].ToString(),
                            Answer             = dr[2].ToString(),
                            OptionsA           = dr[3].ToString(),
                            OptionsB           = dr[4].ToString(),
                            OptionsC           = dr[5].ToString(),
                            OptionsD           = dr[6].ToString(),
                            OptionsReal        = dr[7].ToString(),
                            CreateDateTime     = DateTime.Now,
                            LastUpdateDateTime = DateTime.Now,
                            IsEnabled          = true
                        };
                        db.Insert <AnswerInfoListEntity>(entity);
                    }
                    db.Commit();
                }

                //读写分离 做延时
                await Task.Delay(2000);

                #region  更新问答题库缓存
                RefreshQuestionInfoListCache();
                #endregion

                return(Content(JsonConvert.SerializeObject(new { Status = 1, Error = "导入成功" }), "text/html"));
            }
            else
            {
                return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请确认xls的sheet名称是否为:问答题库;是否有内容" }), "text/html"));
            }
        }
        public ActionResult AddExport()
        {
            var file = Request.Files[0];

            if (file.ContentType != "application/vnd.ms-excel" && file.ContentType != "application/x-xls")
            {
                return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请上传.xlsx文件或者.xls文件" }), "text/html"));
            }

            var excel = new Tuhu.Provisioning.Controls.ExcelHelper(file.InputStream, file.FileName);
            var dt    = excel.ExcelToDataTable("问答题库", true);

            if (dt != null && dt?.Rows?.Count > 0)
            {
                if (dt.Columns.Count != 8)
                {
                    return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请确认文档的列是否只有【编码】【标签】【题目】【选项A】【选项B】【选项B】【选项C】【选项D】【正确选项】这几列" }), "text/html"));
                }

                RepositoryManager manager = new RepositoryManager();
                using (var db = manager.BeginTrans())
                {
                    foreach (DataRow dr in dt.Rows)
                    {
                        AnswerInfoListEntity entity = new AnswerInfoListEntity()
                        {
                            Tip                = dr[1].ToString(),
                            Answer             = dr[2].ToString(),
                            OptionsA           = dr[3].ToString(),
                            OptionsB           = dr[4].ToString(),
                            OptionsC           = dr[5].ToString(),
                            OptionsD           = dr[6].ToString(),
                            OptionsReal        = dr[7].ToString(),
                            CreateDateTime     = DateTime.Now,
                            LastUpdateDateTime = DateTime.Now,
                            IsEnabled          = true
                        };
                        db.Insert <AnswerInfoListEntity>(entity);
                    }
                    db.Commit();
                }
                return(Content(JsonConvert.SerializeObject(new { Status = 1, Error = "导入成功" }), "text/html"));
            }
            else
            {
                return(Content(JsonConvert.SerializeObject(new { Status = -1, Error = "请确认xls的sheet名称是否为:问答题库;是否有内容" }), "text/html"));
            }
        }