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AsyncEnumerableContainsTSource Method (IAsyncEnumerableTSource, TSource, IEqualityComparerTSource, CancellationToken)

Namespace: System.Linq
Assembly: System.Interactive.Async (in System.Interactive.Async.dll) Version: 1.2.0.0
Syntax
C#
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public static Task<bool> Contains<TSource>(
	this IAsyncEnumerable<TSource> source,
	TSource value,
	IEqualityComparer<TSource> comparer,
	CancellationToken cancellationToken
)

Parameters

source
Type: System.Collections.GenericIAsyncEnumerableTSource
value
Type: TSource
comparer
Type: System.Collections.GenericIEqualityComparerTSource
cancellationToken
Type: System.ThreadingCancellationToken

Type Parameters

TSource

Return Value

Type: TaskBoolean

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAsyncEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also