EntityFrameworkQueryableExtensions.AnyAsync Method

Definition

Namespace:

Microsoft.EntityFrameworkCore

Assembly:

Microsoft.EntityFrameworkCore.dll

Package:

Microsoft.EntityFrameworkCore v8.0.0

Overloads

AnyAsync<TSource>(IQueryable<TSource>, CancellationToken)	Asynchronously determines whether a sequence contains any elements.
AnyAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Boolean>>, CancellationToken)	Asynchronously determines whether any element of a sequence satisfies a condition.

AnyAsync<TSource>(IQueryable<TSource>, CancellationToken)

Asynchronously determines whether a sequence contains any elements.

public static System.Threading.Tasks.Task<bool> AnyAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Threading.CancellationToken cancellationToken = default);

static member AnyAsync : System.Linq.IQueryable<'Source> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>

<Extension()>
Public Function AnyAsync(Of TSource) (source As IQueryable(Of TSource), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Boolean)

Type Parameters

TSource

The type of the elements of source.

Parameters

source

IQueryable<TSource>

An IQueryable<T> to check for being empty.

cancellationToken

CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Boolean>

A task that represents the asynchronous operation. The task result contains true if the source sequence contains any elements; otherwise, false.

Exceptions

ArgumentNullException

source is null.

OperationCanceledException

If the CancellationToken is canceled.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information and examples.

See Querying data with EF Core for more information and examples.

AnyAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Boolean>>, CancellationToken)

Asynchronously determines whether any element of a sequence satisfies a condition.

public static System.Threading.Tasks.Task<bool> AnyAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,bool>> predicate, System.Threading.CancellationToken cancellationToken = default);

static member AnyAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, bool>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>

<Extension()>
Public Function AnyAsync(Of TSource) (source As IQueryable(Of TSource), predicate As Expression(Of Func(Of TSource, Boolean)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Boolean)

Type Parameters

TSource

The type of the elements of source.

Parameters

source

IQueryable<TSource>

An IQueryable<T> whose elements to test for a condition.

predicate

Expression<Func<TSource,Boolean>>

A function to test each element for a condition.

cancellationToken

CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Boolean>

A task that represents the asynchronous operation. The task result contains true if any elements in the source sequence pass the test in the specified predicate; otherwise, false.

Exceptions

ArgumentNullException

source or predicate is null.

OperationCanceledException

If the CancellationToken is canceled.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information and examples.

See Querying data with EF Core for more information and examples.