ParallelEnumerable.Contains Method

Definition

Determines in parallel whether a sequence contains a specified element.

Overloads

Contains<TSource>(ParallelQuery<TSource>, TSource, IEqualityComparer<TSource>)

Determines in parallel whether a sequence contains a specified element by using a specified IEqualityComparer<T>.

Contains<TSource>(ParallelQuery<TSource>, TSource)

Determines in parallel whether a sequence contains a specified element by using the default equality comparer.

Contains<TSource>(ParallelQuery<TSource>, TSource, IEqualityComparer<TSource>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Determines in parallel whether a sequence contains a specified element by using a specified IEqualityComparer<T>.

C#
public static bool Contains<TSource>(this System.Linq.ParallelQuery<TSource> source, TSource value, System.Collections.Generic.IEqualityComparer<TSource> comparer);
C#
public static bool Contains<TSource>(this System.Linq.ParallelQuery<TSource> source, TSource value, System.Collections.Generic.IEqualityComparer<TSource>? comparer);

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence in which to locate a value.

value
TSource

The value to locate in the sequence.

comparer
IEqualityComparer<TSource>

An equality comparer to compare values.

Returns

true if the source sequence contains an element that has the specified value; otherwise, false.

Exceptions

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

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

See also

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1
UWP 10.0

Contains<TSource>(ParallelQuery<TSource>, TSource)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Determines in parallel whether a sequence contains a specified element by using the default equality comparer.

C#
public static bool Contains<TSource>(this System.Linq.ParallelQuery<TSource> source, TSource value);

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence in which to locate a value.

value
TSource

The value to locate in the sequence.

Returns

true if the source sequence contains an element that has the specified value; otherwise, false.

Exceptions

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

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

See also

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1
UWP 10.0