public void UpdateParticipants()
{
var participants = new List <ProjectParticipant>();
if (!Participantidfks.IsEmpty() && !ParticipantsToAdd.IsEmpty())
{
participants = Participantidfks.Union(ParticipantsToAdd).ToList();
}
else if (!Participantidfks.IsEmpty())
{
participants = Participantidfks.ToList();
}
else if (!ParticipantsToAdd.IsEmpty())
{
participants = ParticipantsToAdd;
}
Participants = new ObservableCollection <ProjectParticipant>(
participants.Where(p => !ParticipantsToDelete.Any(pp => pp == p))
);
RaisePropertyChanged(nameof(Participants));
}
