RuleValueComparisonAttribute(String, DefaultContexts, ValueComparisonType, String, String, ParametersMode) Constructor

Initializes a new instance of the RuleValueComparisonAttribute class.

Namespace: DevExpress.Persistent.Validation

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

Declaration

public RuleValueComparisonAttribute(
    string id,
    DefaultContexts targetContexts,
    ValueComparisonType operatorType,
    string rightOperand,
    string messageTemplate,
    ParametersMode mode
)
Public Sub New(
    id As String,
    targetContexts As DefaultContexts,
    operatorType As ValueComparisonType,
    rightOperand As String,
    messageTemplate As String,
    mode As ParametersMode
)

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.

DefaultContexts targetContexts

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

ValueComparisonType operatorType

A ValueComparisonType enumeration value that represents the operator type to be used when comparing values.

String rightOperand

The string representation of an expression whose value to be compared with the target property's value.

String messageTemplate

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

ParametersMode mode

A ParametersMode enumeration value specifying how the rightOperand parameter value is treated.

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

See Also