async private void AddEarnings(object sender, EventArgs e)
{
//tutti i campi devono essere compilati
if (String.Equals(EarningsCategory.SelectedItem, null) || String.IsNullOrEmpty(money.Text))
{
await App.Current.MainPage.DisplayAlert("Error", "Try Again", "OK");
}
else if (!IsDigitsOnly(money.Text))
{
await App.Current.MainPage.DisplayAlert("Error", "Insert only digits, dot or comma", "OK");
}
else
{
string category = EarningsCategory.SelectedItem.ToString();
string moneyTrans = money.Text.Replace(',', '.'); //se valore contiene virgola viene sostituita
string task = await firestore.AddTransaction(category, moneyTrans);
if (String.Equals(task, "ok"))
{
App.Current.MainPage = new MainPage();
}
else
{
await App.Current.MainPage.DisplayAlert("Error", "Try Again", "OK");
}
}
}