ParallelEnumerable.Single<TSource> Method (ParallelQuery<TSource>, Func<TSource, Boolean>)
Returns the only element of a parallel sequence that satisfies a specified condition, and throws an exception if more than one such element exists.
Assembly: System.Core (in System.Core.dll)
public static TSource Single<TSource>( this ParallelQuery<TSource> source, Func<TSource, bool> predicate )
The sequence to return the single element of.
The single element of the input sequence that satisfies a condition.
The type of the elements of source.
The query was canceled with the token passed in through WithCancellation.
source or predicate is a null reference (Nothing in Visual Basic).
One or more exceptions occurred during the evaluation of the query.
No element satisfies the condition in predicate. -or- More than one element satisfies the condition in predicate.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 8.1