public new void RemoveRange(int index, int count)
{
var c = GetRange(index, count);
base.RemoveRange(index, count);
CollectionRemove?.Invoke(c, Enumerable.Range(index, count));
}
public new int RemoveAll(Predicate <T> match)
{
var e = FindAll(match);
if (e.Count > 0)
{
int j = -1;
var indexes =
from a in e
select j = IndexOf(a, j + 1);
base.RemoveAll(match);
CollectionRemove?.Invoke(e, indexes);
}
return(e.Count);
}