I don't think there is the distinction between Length and Count you draw - Count is O(1) for most collections, even LinkedList<T> maintains the number of elemen

I don't think there is the distinction between Length and Count you draw - Count is O(1) for most collections, even LinkedList<T> maintains the number of elements in the list in a separate field. You could say Length does not change during the lifetime of an object while Count may do so, but I am not even sure if this distinction is always honored.