public void DeleteNElement(Node2 nodeToDelete)
{
// check for validity of the passed argument here
if (nodeToDelete == null)
{
throw new IndexOutOfRangeException("Not valid element null");
}
if (nodeToDelete.next == null)
{
nodeToDelete.prev.next = null;
}
if (firstElement == nodeToDelete)
{
firstElement = firstElement.next;
firstElement.prev = null;
}
else
{
nodeToDelete.next.prev = nodeToDelete.prev;
nodeToDelete.prev.next = nodeToDelete.next;
}
}