public AddParticipantsViewModel(ParticipantService participantService)
: this()
{
AvaibleParticipants = new ObservableCollection<AlphaKeyGroup<IParticipant>>();
ChosenParticipants = new ObservableCollection<IParticipant>();
ParticipantService = participantService;
ChosenParticipants.CollectionChanged += ChosenParticipantsOnCollectionChanged;
}
private void LoadContactsToDatabase()
{
var service = new ParticipantService();
service.LoadContactsToDbAsync();
}