private void createButton_Click(object sender, RoutedEventArgs e)
        {
            DialogoCrearFactura dialogoCrear = new DialogoCrearFactura(api.Contribuyente)
            {
                CreateHandler = crearFactura
            };

            dialogoCrear.Owner = this;
            dialogoCrear.ShowDialog();
        }
 private void createButton_Click(object sender, RoutedEventArgs e)
 {
     DialogoCrearFactura dialogoCrear = new DialogoCrearFactura(api.Contribuyente)
     {
         CreateHandler = crearFactura
     };
     dialogoCrear.Owner = this;
     dialogoCrear.ShowDialog();
 }