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.NET Framework 4.5.2+

IObjectSpace.IsObjectFitForCriteria(Type, Object, CriteriaOperator) Method

Specifies whether a particular object satisfies the specified criteria.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v23.1.dll

NuGet Package: DevExpress.ExpressApp


bool? IsObjectFitForCriteria(
    Type objectType,
    object obj,
    CriteriaOperator criteria


Name Type Description
objectType Type

The type of the object to be tested.

obj Object

A persistent object to be tested.

criteria CriteriaOperator

A CriteriaOperator object representing a criteria to be tested.


Type Description

true if the specified object passed as the obj parameter satisfies the criteria passed as the criteria parameter; otherwise, false. null (Nothing in VB) if the method could not return a value due to an exception.


To learn how to specify a criteria correctly, refer to the Ways to Build Criteria, Criteria Operators, How to: Build Complex Criteria and How to: Build Simple Criteria topics in the XPO documentation.

When implementing the IObjectSpace interface in the BaseObjectSpace class’s descendant, you don’t have to implement the IsObjectFitForCriteria method. It’s implemented by the BaseObjectSpace class. In this method, the expression evaluator provided by the BaseObjectSpace.GetExpressionEvaluator method is used to check whether the specified object fits for the specified criteria. The type passed as the objectType parameter must be assignable from the type of the object passed as the obj parameter.

See Also