public void Reset()
{
_current = internalhead;
_isFirst = true;
}
public LinkNode(object value, LinkNode next, LinkNode prev)
{
_value = value;
_next = next;
_prev = prev;
}
public LinkedListEnumerator(LinkNode node)
{
internalhead = node;
Reset();
}
public void Clear()
{
internalhead = internaltail = null;
internalcount = 0;
}