I realize there are no way for me to replace value through LinkedList.Enumerator. For instead, I try to port the below Java code to C#

            // Java
            ListIterator<Double> itr1 = linkedList1.listIterator();
            ListIterator<Double> itr2 = linkedList2.listIterator();
            while(itr1.hasNext() && itr2.hasNext()){
                Double d = itr1.next() + itr2.next();
                itr1.set(d);
            }

            // C#
            LinkedList<Double>.Enumerator itr1 = linkedList1.GetEnumerator();
            LinkedList<Double>.Enumerator itr2 = linkedList2.GetEnumerator();

            while(itr1.MoveNext() && itr2.MoveNext()){
                Double d = itr1.Current + itr2.Current;
                // Opps. Compilation error!
                itr1.Current = d;
            }

Any other technique I can use?