public IActionResult AddMarkCourseTeacher(MarkCourseTeacherViewModel markCourseTeacher) { if (!ModelState.IsValid) { return(NoContent()); } markCourseTeacher.UserId = Convert.ToInt32(_signInManager.UserManager.GetUserId(User)); _markService.AddMarkCourseTeacher(_mapper.Map <MarkCourseTeacherViewModel, MarkCourseTeacherDto>(markCourseTeacher)); return(Content(JsonConvert.SerializeObject($"Success add mark {markCourseTeacher.Mark}"), "application/json")); }