private static string InitPanelNo(DateTime dtime) { string panelNo; lock (foo) { // panelNo = LableCode.GetLastPanelNo(string.Format("{0}", dtime.ToString(clsSetting.LABEL_CODE_DATE_FORMAT))); panelNo = LableCode.GetLastPanelNo($"{dtime.ToString(clsSetting.LABEL_CODE_DATE_FORMAT)}"); panelNo = string.IsNullOrEmpty(panelNo) ? string.Format("{0}{1}", dtime.ToString(clsSetting.PANEL_PATTERN), "0000") : (decimal.Parse(panelNo) + 1).ToString(); } return(panelNo); }