Represents a base class for validation system attributes.
Namespace: DevExpress.Persistent.Validation
Assembly: DevExpress.Persistent.Base.v18.2.dll
public abstract class RuleBaseAttribute :
Attribute,
IRuleBaseAttribute,
IRuleCollectionPropertyProperties,
IRuleBasePropertiesPublic MustInherit Class RuleBaseAttribute
Inherits Attribute
Implements 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.
Declare the RuleBaseAttribute descendant's Properties property as non-public. Use the new modifier to hide the base class Properties property.
Alternatively, you can define validation rules in the Application Model. See the Validation Rules topic, for details.