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