ParallelEnumerable::LastOrDefault<TSource> Method (ParallelQuery<TSource>^)

.NET Framework (current version)
 

Returns the last element of a parallel sequence, or a default value if the sequence contains no elements.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

public:
generic<typename TSource>
[ExtensionAttribute]
static TSource LastOrDefault(
	ParallelQuery<TSource>^ source
)

Parameters

source
Type: System.Linq::ParallelQuery<TSource>^

The sequence to return an element from.

Return Value

Type: TSource

default() if the source sequence is empty; otherwise, the last element in the sequence.

Type Parameters

TSource

The type of the elements of source.

Exception Condition
OperationCanceledException

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

ArgumentNullException

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

AggregateException

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

If the query is not ordered, then the last element is non-deterministic. For more information, see Order Preservation in PLINQ.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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