這邊是我讀取和寫入的語法，產生流水號是寫在寫入的方法裡面

[HttpGet]
public async Task<IActionResult> GetRecord()
{
    var data = await _db.WorkovertimeRecordTable.ToListAsync();
    return Ok(data);
}

[HttpPost]
public async Task<IActionResult> Create([FromBody] WorkovertimeRecordDto data)
{
    int lastNumber = 0;
    string AutoCode = "";
    var GetmaxIdRecord = _db.WorkovertimeRecordTable.OrderByDescending(u => u.WorkovertimeId).FirstOrDefault();
    if (GetmaxIdRecord != null)
    {
        string headDate = GetmaxIdRecord.CreateTime.ToString();
        lastNumber = int.Parse(GetmaxIdRecord.WorkovertimeCode.Substring(12,4));
        if (headDate == DateTime.Now.ToString())
        {
            lastNumber++;
            AutoCode = "WOT" + DateTime.Now.ToString("yyyyMMdd") + String.Format("{0:0000}", Convert.ToInt16(lastNumber));
        }
    }
    else
    {
        AutoCode = "WOT" + DateTime.Now.ToString("yyyyMMdd") + String.Format("{0:0000}", 1);
    }
    var InserRecord = new WorkovertimeRecordTable
    {
        WorkovertimeCode = AutoCode,
        DepartmentName = data.DepartmentName,
        FilterName = data.FilterName,
        FactoryName = data.FactoryName,
        Applicant = data.Applicant,
        WoDate = data.WoDate,
        WoStartTime = data.WoStartTime,
        WoEndTime = data.WoEndTime,
        WoReason = data.WoReason,
        WoSum = data.WoSum,
        CreateTime = data.CreateTime
    };
    _db.WorkovertimeRecordTable.Add(InserRecord);
    await _db.SaveChangesAsync();
    return Ok(data);
}

在資料新增後資料庫的部分都是正常的，但網頁端就是show不出產生的編號
是因為這樣產生編號後，編號沒有回填到Shared裡面的資料表嗎?
如果是的話我該怎麼回填編號回去啊?
麻煩大家了~