public void fillCbPlatos()
{
PlatoBLL plbll = new PlatoBLL();
DataTable dt = new DataTable();
dt = plbll.GetPlatosHabilitados();
cbPlatos.ItemsSource = dt.DefaultView;
cbPlatos.DisplayMemberPath = "NOMBRE_PLATO";
cbPlatos.SelectedValuePath = "ID_PLATO";
cbPlatos.SelectedIndex = 0;
}