Hello, I have been struggling to make my inventory lists maintain consistent highlighted items when using a SearchBar or sometime navigating away from the page. I see this great looking sample from the MS Docs' "Xamarin.Forms CollectionView Selection : Multiple Pre-Selection" (I can't post links here, yet)
<CollectionView x:Name="collectionView"
ItemsSource="{Binding Monkeys}"
SelectionMode="Multiple"
SelectedItems="{Binding SelectedMonkeys}">
...
</CollectionView>
namespace CollectionViewDemos.ViewModels
{
public class MonkeysViewModel : INotifyPropertyChanged
{
...
ObservableCollection<object> selectedMonkeys;
public ObservableCollection<object> SelectedMonkeys
{
get
{
return selectedMonkeys;
}
set
{
if (selectedMonkeys != value)
{
selectedMonkeys = value;
}
}
}
public MonkeysViewModel()
{
...
SelectedMonkeys = new ObservableCollection<object>()
{
Monkeys[1], Monkeys[3], Monkeys[4]
};
}
...
}
}
However, I'm not assigning by index numbers... really I'm just trying to say:
SelectedMonkeys = SelectedMonkeys ;
_ SelectedMonkeys are still SelectedMonkeys _
But how do I make that work? I tried this without success:
SelectedItems="{Binding SelectedMonkeys, Mode=TwoWay}"
Thanks!
