ParallelEnumerable.ElementAtOrDefault<TSource> Method (ParallelQuery<TSource>, Int32)
.NET Framework (current version)
Returns the element at a specified index in a parallel sequence or a default value if the index is out of range.
Assembly: System.Core (in System.Core.dll)
public static TSource ElementAtOrDefault<TSource>( this ParallelQuery<TSource> source, int index )
Parameters
- source
-
Type:
System.Linq.ParallelQuery<TSource>
A sequence to return an element from.
- index
-
Type:
System.Int32
The zero-based index of the element to retrieve.
Return Value
Type: TSourcedefault(TSource) if the index is outside the bounds of the source sequence; otherwise, the element at the specified position in the source 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. |
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
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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