public static void dataGridComboboxDataItems(DataGridViewComboBoxColumn cb, string itemType, bool formated) { DataItemsService service = new DataItemsService(); List <DataItems> items = service.getItemsByType(itemType); if (formated) { formatItemName(items); } cb.DataSource = items; cb.DisplayMember = "itemName"; cb.ValueMember = "itemCode"; }