IObjectSpace.GetExpressionEvaluator(EvaluatorContextDescriptor, CriteriaOperator) Method

Creates an ExpressionEvaluator object that is used to evaluate whether objects of the specified type satisfy a particular criteria.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v23.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

ExpressionEvaluator GetExpressionEvaluator(
    EvaluatorContextDescriptor evaluatorContextDescriptor,
    CriteriaOperator criteria
)

VB.NET

Function GetExpressionEvaluator(
    evaluatorContextDescriptor As EvaluatorContextDescriptor,
    criteria As CriteriaOperator
) As ExpressionEvaluator

Parameters

Name	Type	Description
evaluatorContextDescriptor	DevExpress.Data.Filtering.Helpers.EvaluatorContextDescriptor	An EvaluatorContextDescriptor object.
criteria	CriteriaOperator	A CriteiraOperator object that is the criteria used to in the expression to be evaluated.

Returns

Type	Description
DevExpress.Data.Filtering.Helpers.ExpressionEvaluator	An ExpressionEvaluator object initialized for the specified type.

Remarks

When implementing the IObjectSpace interface in the BaseObjectSpace class’ descendant, you don’t have to implement this method. The BaseObjectSpace.GetExpressionEvaluator method creates an instance of the DevExpress.Data.Filtering.Helpers.ExpressionEvaluator class.