RuleObjectExistsAttribute(DefaultContexts, String) Constructor

Initializes a new instance of the RuleObjectExistsAttribute class.

Namespace: DevExpress.Persistent.Validation

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


public RuleObjectExistsAttribute(
    DefaultContexts targetContexts,
    string criteria
Public Sub New(
    targetContexts As DefaultContexts,
    criteria As String


Type Name Description
DefaultContexts targetContexts

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

String criteria

A string value representing the criteria that must be satisfied by the target type objects.


Use this constructor if assigning a specific IRule.Id property value is not necessary.

See Also