public abstract class RuleBaseAttribute :
Public MustInherit Class RuleBaseAttribute
In 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.