public async void Initialize() { DocItem = new Doc() { Date = DateTime.Today }; using (var dbh = new DataBaseHelper()) { StockList.AddList(await dbh.GetElements <Models.Stock>(Tables.StockTable, Tables.StockFields)); MetricUnitList.AddList(await dbh.GetElements <MetricUnit>(Tables.MetricUnitTable, Tables.MetricUnitFields)); MaterialList.AddList(await dbh.GetElements <Material>(Tables.MaterialTable, Tables.MaterialFields)); DocTypeList.AddList(await dbh.GetElements <DocType>(Tables.DocTypeTable, Tables.DocTypeFields)); } }