private void PopulateWalletsComboBox() { var fromres = new List <string>(); var tores = new List <string>(); var filterRes = new List <string>(); filterRes.Add(this.none); var rdr = DB_API.SelectAccountWallets(account_id); while (rdr.Read()) { fromres.Add(rdr[DB_API.WalletEnt.name.ToString()].ToString()); tores.Add(rdr[DB_API.WalletEnt.name.ToString()].ToString()); filterRes.Add(rdr[DB_API.WalletEnt.name.ToString()].ToString()); } wallet_comboBox.DataSource = fromres; wallet2_comboBox.DataSource = tores; filterwallet_comboBox.DataSource = filterRes; }