RuleObjectExistsAttribute(String) Constructor

Initializes a new instance of the RuleObjectExistsAttribute class.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v20.2.dll

NuGet Package: DevExpress.Persistent.Base

Declaration

C#

public RuleObjectExistsAttribute(
    string criteria
)

VB.NET

Public Sub New(
    criteria As String
)

Parameters

Name	Type	Description
criteria	String	A string value representing the criteria that must be satisfied by the target type objects.

Remarks

The common rules of writing a criteria are described in the Ways to Build Criteria topic. In addition, you can use the following construction: “PropertyName = ‘@PropertyName’” (the operator is optional). @PropertyName represents a parameter that is set to the value of the PropertyName property of the currently validated object, when the rule is checked.