RuleUniqueValueAttribute.CriteriaEvaluationBehavior Property

Specifies whether to look for objects that are currently retrieved from the database, in addition to the objects in the database itself.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v18.2.dll

Declaration

public CriteriaEvaluationBehavior CriteriaEvaluationBehavior { get; set; }
Public Property CriteriaEvaluationBehavior As CriteriaEvaluationBehavior

Property Value

Type Description
CriteriaEvaluationBehavior

A CriteriaEvaluationBehavior enumeration value representing the behavior for searching for the required objects.

The following values are available:

  • BeforeTransaction

    Only objects in the database will be considered.

  • InTransaction

    Objects in the database and those that are currently retrieved from it will be considered.

By default, this property is set to InTransaction.

Note

When defining the RuleUniqueValueAttribute in code, the value for the CriteriaEvaluationBehavior property is passed as a named parameter. This means that you do not have to specify it. However, when specifying the parameter, use the following format: CriteriaEvaluationBehavior = CriteriaEvaluationBehavior.InTransaction (CriteriaEvaluationBehavior := CriteriaEvaluationBehavior.InTransaction, in Visual Basic).

See Also