General Information
.NET Subscription
Desktop
Web
Code / Debug / Refactor
Frameworks and Libraries
IOS, Android & Xamarin
RuleBaseAttribute Class
Represents a base class for validation system attributes.
Namespace: DevExpress.Persistent.Validation
Assembly: DevExpress.Persistent.Base.v18.1.dll
Syntax
public abstract class RuleBaseAttribute :
Attribute,
_Attribute,
IRuleBaseAttribute,
IRuleCollectionPropertyProperties,
IRuleBasePropertiesIn the eXpressApp Framework, to define a particular validation rule for a business class or its property, you can use built-in validation attributes. The RuleBaseAttribute represents a base class for all validation attributes. It provides properties that can be used in any descendent attribute. For details, refer to the class' member list.
Note
Alternatively, you can define validation rules in the Application Model. See the Validation Rules topic, for details.