async void onAddBtnClicked(object sender, EventArgs e)
{
var nextPage = new EvaluacionesCreateUpdatePage(asignaturaUid, true)
{
BindingContext = new Evaluacion()
};
await Navigation.PushAsync(nextPage);
}
async public void OnEdit(object sender, EventArgs e)
{
var menuItem = ((MenuItem)sender);
Evaluacion evaluacion = menuItem.CommandParameter as Evaluacion;
var nextPage = new EvaluacionesCreateUpdatePage(asignaturaUid, false);
nextPage.BindingContext = evaluacion;
await Navigation.PushAsync(nextPage);
}
