XPQueryExtensions.AverageAsync<T>(IQueryable<T>, Expression<Func<T, Int32>>, CancellationToken) Method
Asynchronously calculates an average of objects’ specific Int32 fields for a query. Uses a lambda expression to obtain values.
Namespace: DevExpress.Xpo
Assembly: DevExpress.Xpo.v20.2.dll
NuGet Package: DevExpress.Xpo
NuGet Packages: DevExpress.WindowsDesktop.Xpo, DevExpress.Xpo
Declaration
Parameters
Name | Type | Description |
---|---|---|
query | IQueryable<T> | An XPQuery<T> that specifies a persistent object selection. |
selector | Expression<Func<T, Int32>> | A lambda expression that gets a value from a persistent object. |
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<Double> | A Task that returns an average of objects’ specific Int32 fields for a query. |
See Also