(C#) Swap two items in a generic list

Put this in a static class. This will apply to Lists of any type.

public static IList<T> Swap<T>(this IList<T> list, int indexA, int indexB)
{
	if (indexB > -1 && indexB < list.Count)
	{
		T tmp = list[indexA];
		list[indexA] = list[indexB];
		list[indexB] = tmp;
	}
	return list;
}

Simply call it like this

myList.Swap(indexA, indexB);