public void Llenar(ComboBox CbN2, int IDConta_Jera, TextBox TxtCodigoGrupo) { Conta_Jerarquia_2TableAdapter adapter = new Conta_Jerarquia_2TableAdapter(); try { CbN2.DataSource = adapter.SelectJerar2(IDConta_Jera); CbN2.DisplayMember = "Nombre"; CbN2.ValueMember = "IDConta_Jera_2"; CbN2.SelectedIndex = 0; } catch (Exception) { List <ClassCbDatoMostrar> Datos = new List <ClassCbDatoMostrar>(); ClassCbDatoMostrar Insertar = new ClassCbDatoMostrar(); Insertar.ID = 0; Insertar.Dato = "NO EXISTRE"; Datos.Add(Insertar); CbN2.DataSource = Datos; CbN2.DisplayMember = "Dato"; CbN2.ValueMember = "ID"; } LLenarCodigo(Convert.ToInt32(CbN2.SelectedValue), TxtCodigoGrupo); }