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.NET 8.0+

XPQueryExtensions.SumAsync(IQueryable<Nullable<Int64>>, CancellationToken) Method

Asynchronously calculates a sum of objects’ specific nullable Int64 fields for a query.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.2.dll

NuGet Package: DevExpress.Xpo

#Declaration

public static Task<long?> SumAsync(
    this IQueryable<long?> query,
    CancellationToken cancellationToken = default(CancellationToken)
)

#Parameters

Name Type Description
query IQueryable<Nullable<Int64>>

An XPQuery<T> that specifies a persistent object selection.

#Optional Parameters

Name Type Default Description
cancellationToken CancellationToken null

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

#Returns

Type Description
Task<Nullable<Int64>>

A Task that returns a sum of objects’ specific nullable Int64 fields for a query.

See Also