public TrucksViewModel()
{
Title = "Browse";
Trucks = new ObservableRangeCollection <Truck>();
LoadTrucksCommand = new Command(() => ExecuteLoadTrucksCommand());
DeleteCommand = new Command(() => ExecutedeleteCommand());
MessagingCenter.Subscribe <NewTruckPage, Truck>(this, "AddItem", async(obj, truck) =>
{
var _truck = truck as Truck;
Trucks.Add(_truck);
await TruckStore.AddTruckAsync(_truck);
});
}
