RuleObjectExistsProperties Class

Represent the RuleObjectExists Validation Rules‘ properties exported to the Application Model.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v23.2.dll

NuGet Package: DevExpress.Persistent.Base

Declaration

C#
VB.NET

[DomainComponent]
[RulePropertiesIndexed]
public class RuleObjectExistsProperties :
    RuleSearchObjectProperties,
    IRuleObjectExistsProperties,
    IRuleSearchObjectProperties,
    IRuleCollectionPropertyProperties,
    IRuleBaseProperties

<DomainComponent>
<RulePropertiesIndexed>
Public Class RuleObjectExistsProperties
    Inherits RuleSearchObjectProperties
    Implements IRuleObjectExistsProperties,
               IRuleSearchObjectProperties,
               IRuleCollectionPropertyProperties,
               IRuleBaseProperties

Remarks

Information on the Validation Rules declared in the application is saved to the Application Model‘s IModelValidationRules node. Each rule has a corresponding node. These nodes expose properties specifying values for the rules’ properties.

The properties that must be exposed to the Application Model are specified via a rule’s RuleBase.Properties property. This property returns a RuleBaseProperties descendant.

When implementing a custom Validation Rule, you may need to implement a cusom Properties class inherited from RuleBaseProperties. For details, refer to the Implement Custom Rules topic.