GetCoursesByGrades Backup

 //int[] GradeID
        [Authorize(Roles = "Instructor")]
        [HttpGet("GetCoursesByGrades")]
        public async Task<object> GetCoursesByGrades([ModelBinder(BinderType = typeof(MultipartModelBinder))] ClassRoomVM postData)
        {
            try
            {
                List<int> neemaGradeIds = await UnitOfWork.InstituteGradeRepository.Get(x => postData.GradeID.Contains(x.GradeID))
                    .Select(x => x.NeemaGradeID).ToListAsync();

                var courses = await UnitOfWork.CourseRepository.Get(c => c.IsActive && !c.IsDeleted && c.CourseGrade.Any(x=> neemaGradeIds.Contains(x.GradeID)))
                    .Select(x=>new
                    {
                        CourseID=x.CourseID,
                        CourseName=x.CourseName
                    })
              .ToListAsync();



                return ApiResultHelper.CreateApiResult(this, success: true, message: "Got Courses By Grades successfully.", result: courses);
            }
            catch (Exception ex)
            {
                TheLogger.Log("ClassRoomController", LogLevel.Error, "GetCoursesByGrades " + ex.Message, ex: ex);
                return ApiResultHelper.CreateApiResult(this, success: false, message: "Failed to Got Courses By Grades.", statusCode: System.Net.HttpStatusCode.InternalServerError);
            }
        }