.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+
.NET Core 3.0+

RuleUniqueValueAttribute(String, DefaultContexts, String) Constructor

Initializes a new instance of the RuleUniqueValueAttribute class.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v19.2.dll

Declaration

public RuleUniqueValueAttribute(
    string id,
    DefaultContexts targetContexts,
    string messageTemplate
)
Public Sub New(
    id As String,
    targetContexts As DefaultContexts,
    messageTemplate As String
)
public RuleUniqueValueAttribute(
    string id,
    DefaultContexts targetContexts,
    string messageTemplate
)
Public Sub New(
    id As String,
    targetContexts As DefaultContexts,
    messageTemplate As String
)
public RuleUniqueValueAttribute(
    string id,
    DefaultContexts targetContexts,
    string messageTemplate
)
Public Sub New(
    id As String,
    targetContexts As DefaultContexts,
    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.

messageTemplate String

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

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.

messageTemplate String

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

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.

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.

See Also