Returns the element at a specified index in a parallel sequence or a default value if the
index is out of range.
Namespace:
System.Linq
Assembly:
System.Threading (in System.Threading.dll)
Syntax
| Visual Basic (Declaration) |
|---|
Public Shared Function ElementAtOrDefault(Of TSource) ( _
source As ParallelQuery(Of TSource), _
index As Integer _
) As TSource |
| C# |
|---|
public static TSource ElementAtOrDefault<TSource>(
ParallelQuery<TSource> source,
int index
)
|
Parameters
- source
- Type: System.Linq..::.ParallelQuery<(Of <(TSource>)>)
A sequence to return an element from.
- index
- Type: System..::.Int32
The zero-based index of the element to retrieve.
Type Parameters
- TSource
- The type of the elements of source.
Return Value
default(TSource) if the index is outside the bounds of the source sequence;
otherwise, the element at the specified position in the source sequence.
Exceptions
| Exception | Condition |
|---|
| System..::.ArgumentNullException |
source is a null reference (Nothing in Visual Basic).
|
| System..::.AggregateException |
One or more exceptions occurred during the evaluation of the query.
|
| System..::.OperationCanceledException |
The query was canceled.
|
See Also
