RuleUniqueValueAttribute(String, String, String) Constructor

Initializes a new instance of the RuleUniqueValueAttribute class.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v18.1.dll

Syntax

public RuleUniqueValueAttribute(
    string id,
    string targetContextIDs,
    string messageTemplate
)

Parameters

Type Name Description
String id

A string value representing the current rule identifier. You can pass an empty value as the id parameter. An appropriate identifier will begenerated automatically, and set for the ID property of the Validation | Rules | Rule node in the Application Model.

String targetContextIDs

A string value that specifies a list of identifiers of the contexts when the current rule should be checked. This value is set for the RuleBaseAttribute.TargetContextIDs property.

String messageTemplate

A string value representing information defining the current rule. This value is set for the RuleBaseAttribute.CustomMessageTemplate property.

If you are going to use a default message template for the rule, use a constructor without the messageTemplate parameter.