public string GetAllClassSchedulesByDeparmentId(int departmentId, int courseId)
        {
            IEnumerable <TempClassSchedule> classSchedules = classRoomGateway.GetAllClassSchedulesByDeparmentId(departmentId, courseId);

            string output = "";

            foreach (var acls in classSchedules)
            {
                if (acls.RoomName.StartsWith("R"))
                {
                    output += acls.RoomName + ", " + acls.DayName + ", " + acls.StartTime.ToShortTimeString() + " - " + acls.EndTime.ToShortTimeString() + ";<br />";
                }

                else if (acls.RoomName.StartsWith("N"))
                {
                    output = acls.RoomName;
                }
            }

            return(output);
        }