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.NET Framework 4.6.2+

XPQueryExtensions.ContainsAsync<T>(IQueryable<T>, T, CancellationToken) Method

Asynchronously checks whether a specific object exists in a selection.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.2.dll

Declaration

public static Task<bool> ContainsAsync<T>(
    this IQueryable<T> query,
    T item,
    CancellationToken cancellationToken = default(CancellationToken)
)

Parameters

Name Type Description
query IQueryable<T>

An XPQuery<T> that specifies a selection of persistent objects.

item T

An object, which specifies a persistent object to be found in a selection.

Optional Parameters

Name Type Default Description
cancellationToken CancellationToken null

A CancellationToken object that delivers a cancellation notice to the running operation.

Type Parameters

Name
T

Returns

Type Description
Task<Boolean>

A Task that returns true if a specific object exists in a selection. Otherwise, it returns false.

See Also