Session.EvaluateInTransactionAsync(XPClassInfo, CriteriaOperator, CriteriaOperator, CancellationToken) Method

Asynchronously evaluates the specified expression against objects of the specified type. Accounts for all in-memory object changes.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.1.dll

NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo

NuGet Package: DevExpress.Xpo

Declaration

C#

public Task<object> EvaluateInTransactionAsync(
    XPClassInfo classInfo,
    CriteriaOperator expression,
    CriteriaOperator criteria,
    CancellationToken cancellationToken = default(CancellationToken)
)

VB.NET

Public Function EvaluateInTransactionAsync(
    classInfo As XPClassInfo,
    expression As CriteriaOperator,
    criteria As CriteriaOperator,
    cancellationToken As CancellationToken = Nothing
) As Task(Of Object)

Parameters

Name	Type	Description
classInfo	XPClassInfo	An XPClassInfo object that identifies the type of objects against which the expression is evaluated.
expression	CriteriaOperator	A CriteriaOperator object that specifies the expression to evaluate.
criteria	CriteriaOperator	A CriteriaOperator object that specifies the filter criteria. The methods evaluates the expression against objects that match these criteria.

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<Object>	A Task that returns a value. This value is the evaluation’s result.