.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+

SessionObjectLayer.SelectDataAsync(Session, ObjectsQuery, CriteriaOperatorCollection, CriteriaOperatorCollection, CriteriaOperator, CancellationToken) Method

Retrieves object data from a session asynchronously, according to specified query parameters.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v20.2.dll


public Task<List<object[]>> SelectDataAsync(
    Session session,
    ObjectsQuery query,
    CriteriaOperatorCollection properties,
    CriteriaOperatorCollection groupProperties,
    CriteriaOperator groupCriteria,
    CancellationToken cancellationToken = default(CancellationToken)
Public Function SelectDataAsync(
    session As Session,
    query As ObjectsQuery,
    properties As CriteriaOperatorCollection,
    groupProperties As CriteriaOperatorCollection,
    groupCriteria As CriteriaOperator,
    cancellationToken As CancellationToken = Nothing
) As Task(Of List(Of Object()))


Name Type Description
session Session

A Session that is used to retrieved persistent objects.

query ObjectsQuery

An array of ObjectsQuery objects that specifies queries executed to select data.

properties CriteriaOperatorCollection

A CriteriaOperatorCollection object which specifies object properties to be retrieved.

groupProperties CriteriaOperatorCollection

A CriteriaOperatorCollection object which specifies the grouping properties.

groupCriteria CriteriaOperator

A CriteriaOperator descendant which specifies the grouping criteria for the retrieved objects.

Optional Parameters

Name Type Default Description
cancellationToken CancellationToken


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


Type Description

A Task that returns a list of object arrays. These object arrays match specified query parameters.

See Also