private void InitForm() { GenderComboBox.Items.AddRange(new string[] { "Male", "Female" }); var banks_list = _bankManager.GetAllBanks(); BankComboBox.DataSource = banks_list; BankComboBox.DisplayMember = "Name"; BankComboBox.ValueMember = "BankID"; var country_list = _countryManager.GetAllCountries(); CountryComboBox.DataSource = country_list; CountryComboBox.DisplayMember = "Name"; CountryComboBox.ValueMember = "CountryID"; }