// обработка нажатия элемента в списке
private async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
BarecodeResult selectedBarecode = (BarecodeResult)e.SelectedItem;
BarecodeResultPage barecodePage = new BarecodeResultPage();
barecodePage.BindingContext = selectedBarecode;
await Navigation.PushAsync(barecodePage);
}
// обработка нажатия кнопки добавления
private async void CreateBarecode(object sender, EventArgs e)
{
BarecodeResult result = new BarecodeResult();
BarecodeResultPage barecodePage = new BarecodeResultPage();
result.Status = 1;
result.dateTime = DateTime.Now;
barecodePage.BindingContext = result;
await Navigation.PushAsync(barecodePage);
}