public PersonaViewModel() { Personas = servicio.consultar(); GuardarCommand = new Command(async() => await Guadar(), () => !IsBusy); ModificarCommand = new Command(async() => await Modificar(), () => !IsBusy); EliminarCommand = new Command(async() => await Eliminar(), () => !IsBusy); LimpiarCommand = new Command(Limpiar, () => !IsBusy); }