public static IOrderedEnumerable<T> ThenBy<T, TKey>(
	this IOrderedEnumerable<T> source,
	Func<T, TKey> keySelector,
	IComparer<TKey> comparer,
	OrderByDirection direction
)

<ExtensionAttribute>
Public Shared Function ThenBy(Of T, TKey) ( 
	source As IOrderedEnumerable(Of T),
	keySelector As Func(Of T, TKey),
	comparer As IComparer(Of TKey),
	direction As OrderByDirection
) As IOrderedEnumerable(Of T)

public:
[ExtensionAttribute]
generic<typename T, typename TKey>
static IOrderedEnumerable<T>^ ThenBy(
	IOrderedEnumerable<T>^ source, 
	Func<T, TKey>^ keySelector, 
	IComparer<TKey>^ comparer, 
	OrderByDirection direction
)

[<ExtensionAttribute>]
static member ThenBy : 
        source : IOrderedEnumerable<'T> * 
        keySelector : Func<'T, 'TKey> * 
        comparer : IComparer<'TKey> * 
        direction : OrderByDirection -> IOrderedEnumerable<'T>