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.NET 6.0+

RuleCombinationOfPropertiesIsUniqueAttribute(String, DefaultContexts, String) Constructor

Initializes a new instance of the RuleCombinationOfPropertiesIsUniqueAttribute class.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v24.1.dll


public RuleCombinationOfPropertiesIsUniqueAttribute(
    string id,
    DefaultContexts targetContexts,
    string targetProperties


Name Type Description
id String

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.

targetContexts DefaultContexts

A DefaultContexts enumeration value that specifies a context for checking the current rule. This value is set for the RuleBaseAttribute.TargetContextIDs property.

targetProperties String

A string specifying the properties whose combination must be unique. The property names can be separated by the comma, semicolon and whitespace characters.


If you are going to set a custom message template instead of a default template, use a constructor with the messageTemplate parameter.

See Also