public IOrderedEnumerable <TSource> CreateOrderedEnumerable <TKey>(Func <TSource, TKey> keySelector, IComparer <TKey> comparer, bool descending)
{
ElementComparer <TSource, TKey> elementComparer = new ElementComparer <TSource, TKey>(keySelector, comparer ?? Comparer <TKey> .Default, descending, null);
return(new OrderedEnumerable <TSource>(m_source, m_elementComparer.Append(elementComparer)));
}
// Creates a new ElementComparer by appending the specified ordering to this ordering, chaining them together. public abstract ElementComparer <TSource> Append(ElementComparer <TSource> next);
// Creates a new OrderedEnumerable that will sort 'source' according to 'ordering'.
public OrderedEnumerable(IEnumerable <TSource> source, ElementComparer <TSource> elementComparer)
{
m_source = source;
m_elementComparer = elementComparer;
}