The requested page is not available for the requested platform. You are viewing the content for Default platform.

RuleObjectExistsAttribute(String) Constructor

Initializes a new instance of the RuleObjectExistsAttribute class.

Namespace: DevExpress.Persistent.Validation

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

Declaration

public RuleObjectExistsAttribute(
    string criteria
)
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.

See Also