Elegant way to get the next element in an array or list (circled)

GetNextItemInListOrArray

//Assume we have 5 items in our list
List<Item> myList = new List<Item>(5);

//Assume our current active item is at index 2
public Item GetNextItem(Item item)
{
    int currentIndex = myList.IndexOf(item);
    int nextItemIndex = (currentIndex + 1) % myList.Count;
    return myList[nextItemIndex];
}