XPQueryExtensions.SumAsync<T>(IQueryable<T>, Expression<Func<T, Int64>>, CancellationToken) Method
Asynchronously calculates a sum of objects’ specific Int64 fields, for a query. Uses a lambda expression to obtain values.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v24.2.dll
NuGet Package: DevExpress.Xpo
#Declaration
public static Task<long> SumAsync<T>(
this IQueryable<T> query,
Expression<Func<T, long>> selector,
CancellationToken cancellationToken = default(CancellationToken)
)
#Parameters
Name | Type | Description |
---|---|---|
query | IQueryable<T> | An XPQuery |
selector | Expression<Func<T, Int64>> | A lambda expression that gets a value from a persistent object. |
#Optional Parameters
Name | Type | Default | Description |
---|---|---|---|
cancellation |
Cancellation |
null | A Cancellation |
#Type Parameters
Name |
---|
T |
#Returns
Type | Description |
---|---|
Task<Int64> | A Task that returns a sum of objects’ specific Int64 fields, for a query. |
See Also