public async Task <IActionResult> DownloadGrid(string quizId)
        {
            var watch        = System.Diagnostics.Stopwatch.StartNew();
            var options      = _reportService.GetQuestions(Guid.Parse(quizId));
            var questionList = _reportService.GetAnswersBySurveyId(Guid.Parse(quizId));

            var sortAnswers = questionList.GroupBy(u => u.RespondentId)
                              .Select(grp => new AnswerGroup {
                DateCreated = grp.First().DateCreated, DataList = grp.ToList()
            })
                              .ToList();

            var result = new FileViewModel()
            {
                HeaderOption = options,
                Answers      = sortAnswers,
            };

            var exportData = _excelService.ExportExcel(result, "", true);

            watch.Stop();
            var elapsedMs  = watch.ElapsedMilliseconds;
            var elapsedSec = elapsedMs / 1000;

            return(new FileContentResult(exportData.Content, exportData.ContentType));
        }
        [AuthFilter]//身份认证,不带token或者token错误会被拦截器拦截进不来这个接口
        public IActionResult ExportExcel()
        {
            string title     = "用户列表";
            string sheetName = "用户列表";
            Dictionary <string, string> dicColumns = new Dictionary <string, string>();

            dicColumns.Add("Email", "邮箱");
            dicColumns.Add("UserName", "用户名");
            dicColumns.Add("LoginType", "用户类型");
            dicColumns.Add("CreateTime", "创建时间");
            var user = _BaseService.GetListWriteBy <Users>(x => x.Disable == false && x.AuthRole == AuthRole.User).ToList();

            byte[] buffer = _excelService.ExportExcel(user, title, sheetName, dicColumns);
            string path   = "用户" + DateTime.Now.ToString("yyyy-MM-dd-HH-m") + ".xlsx";

            return(File(buffer, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
                        path));
        }