public async Task<IHttpActionResult> PutPensionHoliday(int id, PensionHoliday pensionHoliday)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != pensionHoliday.PensionHolidayNo)
            {
                return BadRequest();
            }

            db.Entry(pensionHoliday).State = EntityState.Modified;

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!PensionHolidayExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }
        public async Task<IHttpActionResult> PostPensionHoliday(PensionHoliday pensionHoliday)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.PensionHolidays.Add(pensionHoliday);
            await db.SaveChangesAsync();

            return CreatedAtRoute("DefaultApi", new { id = pensionHoliday.PensionHolidayNo }, pensionHoliday);
        }
        private async Task<List<PensionHoliday>> AddPensionHoliday(Pension pension, string holiday)
        {
            List<PensionHoliday> pensionHolidays = new List<PensionHoliday>();
            
            var arr = HttpUtility.UrlDecode(holiday.ToString()).Split(',');

            for (int i = 0; i < arr.Length; i++)
            {
                PensionHoliday pensionHoliday = new PensionHoliday();
                pensionHoliday.PensionNo = pension.PensionNo;
                pensionHoliday.PensionHolidayCode = int.Parse(arr[i].ToString());
                pensionHolidays.Add(pensionHoliday);
            }

            db.PensionHolidays.AddRange(pensionHolidays);
            await db.SaveChangesAsync();

            return pensionHolidays;
        }