public void Subsribe(FullyObservableCollection <T> subsriber)
{
if (subsriber == null)
{
return;
}
lock (locker)
{
if (!subsribers.Contains(subsriber))
{
subsribers.Add(subsriber);
foreach (var d in data.Values)
{
if (!subsriber.Any(a => KeySelector(a) == KeySelector(d)))
{
subsriber.Add(d);
}
}
}
}
}
