ParallelEnumerable.OrderByDescending ParallelEnumerable.OrderByDescending ParallelEnumerable.OrderByDescending ParallelEnumerable.OrderByDescending Method

Definition

Sorts the elements of a sequence in descending order.

Overloads

OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)

Sorts in parallel the elements of a sequence in descending order according to a key.

OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)

Sorts the elements of a sequence in descending order by using a specified comparer.

OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>)

Sorts in parallel the elements of a sequence in descending order according to a key.

public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::OrderedParallelQuery<TSource> ^ OrderByDescending(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, TKey> ^ keySelector);
public static System.Linq.OrderedParallelQuery<TSource> OrderByDescending<TSource,TKey> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,TKey> keySelector);
static member OrderByDescending : System.Linq.ParallelQuery<'Source> * Func<'Source, 'Key> -> System.Linq.OrderedParallelQuery<'Source>
<Extension()>
Public Function OrderByDescending(Of TSource, TKey) (source As ParallelQuery(Of TSource), keySelector As Func(Of TSource, TKey)) As OrderedParallelQuery(Of TSource)

Type Parameters

TSource

The type of elements of source.

TKey

The type of the key returned by keySelector.

Parameters

keySelector
Func<TSource,TKey>

A function to extract a key from an element.

Returns

An OrderedParallelQuery{TSource} whose elements are sorted descending according to a key.

Exceptions

source or keySelector is a null reference (Nothing in Visual Basic).

The query was canceled with the token passed in through WithCancellation.

One or more exceptions occurred during the evaluation of the query.

Remarks

In contrast to the sequential implementation, this is not a stable sort. See the remarks for OrderBy for an approach to implementing a stable sort.

See also

OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>) OrderByDescending<TSource,TKey>(ParallelQuery<TSource>, Func<TSource,TKey>, IComparer<TKey>)

Sorts the elements of a sequence in descending order by using a specified comparer.

public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::OrderedParallelQuery<TSource> ^ OrderByDescending(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, TKey> ^ keySelector, System::Collections::Generic::IComparer<TKey> ^ comparer);
public static System.Linq.OrderedParallelQuery<TSource> OrderByDescending<TSource,TKey> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,TKey> keySelector, System.Collections.Generic.IComparer<TKey> comparer);
static member OrderByDescending : System.Linq.ParallelQuery<'Source> * Func<'Source, 'Key> * System.Collections.Generic.IComparer<'Key> -> System.Linq.OrderedParallelQuery<'Source>
<Extension()>
Public Function OrderByDescending(Of TSource, TKey) (source As ParallelQuery(Of TSource), keySelector As Func(Of TSource, TKey), comparer As IComparer(Of TKey)) As OrderedParallelQuery(Of TSource)

Type Parameters

TSource

The type of elements of source.

TKey

The type of the key returned by keySelector.

Parameters

keySelector
Func<TSource,TKey>

A function to extract a key from an element.

comparer
IComparer<TKey>

An IComparer{TKey} to compare keys.

Returns

An OrderedParallelQuery{TSource} whose elements are sorted descending according to a key.

Exceptions

source or KeySelector is a null reference (Nothing in Visual Basic).

The query was canceled with the token passed in through WithCancellation.

One or more exceptions occurred during the evaluation of the query.

Remarks

In contrast to the sequential implementation, this is not a stable sort. See the remarks for OrderBy for an approach to implementing a stable sort.

See also

Applies to