static List <Ordering> SplitOrderingString(string orderString)
{
string[] orderings = SplitWithRemoveEmptyEntries(orderString, ',');
List <Ordering> orderingList = new List <Ordering>(orderings.Length);
for (int i = 0; i < orderings.Length; i++)
{
orderingList.Add(Ordering.Create(orderings[i]));
}
return(orderingList);
}