维护基础数据之后，程序不重启，不能正确显示转换内容。

    public static ObservableCollection<CListModel> AllTravelProjectList
        {
            get
            {
                if (_BankStatementStatusList == null)
                {
                    var travelProject = OutPutManageDal.GetInstance().GetOutPut(new XGX_TRAVELPROJECT());
                    _BankStatementStatusList = new ObservableCollection<CListModel>();

                    foreach (var item in travelProject)
                    {
                        CListModel cm = new CListModel();
                        cm.DisplayValue = item.PROJECT_NAME;
                        cm.SelectValue = item.ID.ToString();

                        _BankStatementStatusList.Add(cm);
                    }
                }

                return _BankStatementStatusList;
            }
        }