public void AddMarkCourseTeacher(MarkCourseTeacherDto markCourseTeacherDto) { var markCourseTeacher = _mapper.Map <MarkCourseTeacher>(markCourseTeacherDto); markCourseTeacher.CourseTeacherId = _courseRepository.GetCourseTeacherId(markCourseTeacherDto.CourseId, markCourseTeacherDto.TeacherId); _markRepository.AddMarkCourseTeacher(markCourseTeacher); }