老师排课表下载调整

Edu.WebApi/Controllers/Course/TeacherClassController.cs

@@ -552,6 +552,10 @@ namespace Edu.WebApi.Controllers.Course
             List<RB_Course_ViewModel> courseList = new List<RB_Course_ViewModel>();
             TeacherList = classModule.GetAppointmentPlanStatExport(StartDate, EndDate, TeacherId, ClassRoomId, ClassType, AppointState, base.UserInfo.Group_Id, out list, out reserveList, out appointList, out timeList, out guestList, out tempGuestList, out visitorList, out chatperList,out courseList);
             TeacherList = TeacherList?.Where(qitem => qitem.Dept_Id == 8)?.OrderBy(qitem => qitem.SortNum)?.ToList();
+            if (TeacherList != null)
+            {
+                TeacherList.Add(new RB_Teacher_ViewModel() { TId = 0, TeacherName = "无" });
+            }
             try
             {
                 ExcelDataSource headerTimeFrist = new ExcelDataSource()