async void SaveButton_Clicked(object sender, EventArgs e) { SaveButton.IsEnabled = false; string desc = DescriptionEntry.Text != Strings.Description? DescriptionEntry.Text:""; Log log = new Log((String)FarmPicker.SelectedItem, (String)ProblemTypePicker.SelectedItem, desc); if (await LogBook.SaveLog(log)) { await Navigation.PushAsync(new LogBookPage()); } SaveButton.IsEnabled = true; }