Base De Datos

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using Dominio;

using Dominio.Observer;

using System.Globalization;

using System.Reflection;

namespace Interfaz

{

public partial class VentanaEditarPieza : Form, IObservador

{

private Stock stock;

private BindingSource bindingSource;

private Parte pieza;

public VentanaEditarPieza()

{

InitializeComponent();

comboBoxMedio.DataSource = Enum.GetValues(typeof(Constantes.Medio));

stock = Stock.ObtenerInstancia();

stock.AgregarObservador(this);

bindingSource = new BindingSource();

bindingSource.DataSource = stock.ModelosPiezas;

comboBoxModelos.DataSource = bindingSource;

}

public void Actualizar(Observable observable)

{

bindingSource.ResetBindings(false);

}

private void buttonGuardar_Click(object sender, EventArgs e)

{

if (!MetodosComunesInterfaz.ValidateFields(this.Controls))

{

MessageBox.Show(Constantes.competarTodosLosCampos);

return;

}

if (MessageBox.Show(Constantes.borrarPiezasConfirmation, "Confirm delete", MessageBoxButtons.YesNo)

...