RuleCombinationOfPropertiesIsUniqueAttribute(String, DefaultContexts, String, String) Constructor

Initializes a new instance of the RuleCombinationOfPropertiesIsUniqueAttribute class.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v18.2.dll

Declaration

C#

public RuleCombinationOfPropertiesIsUniqueAttribute(
    string id,
    DefaultContexts targetContexts,
    string targetProperties,
    string messageTemplate
)

VB.NET

Public Sub New(
    id As String,
    targetContexts As DefaultContexts,
    targetProperties As String,
    messageTemplate As String
)

Parameters

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

Remarks

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