AppearanceAttribute(String, AppearanceItemType, String) Constructor

Creates a new instance of the AppearanceAttribute using the specified parameters.

Namespace: DevExpress.ExpressApp.ConditionalAppearance

Assembly: DevExpress.Persistent.Base.v23.2.dll

NuGet Package: DevExpress.Persistent.Base

Declaration

C#

public AppearanceAttribute(
    string id,
    AppearanceItemType appearanceItemType,
    string criteria
)

VB.NET

Public Sub New(
    id As String,
    appearanceItemType As AppearanceItemType,
    criteria As String
)

Parameters

Name	Type	Description
id	String	A string that is the unique identifier for the appearance rule created using the current attribute instance.
appearanceItemType	AppearanceItemType	An AppearanceItemType enumeration value specifying the type of UI elements affected by the conditional appearance rule that is created using the current attribute instance.
criteria	String	A string that is the criterion for activation of the rule created using the current attribute instance.

Remarks

This constructor sets the following attribute properties:

• AppearanceAttribute.Id is set to the value passed as the id parameter;
• AppearanceAttribute.AppearanceItemType is set to the value passed as the appearanceItemType parameter.
• AppearanceAttribute.Criteria is set to the value passed as the criteria parameter;
• AppearanceAttribute.Context is set to Any (a default value);

The remaining properties can be specified using the constructor’s named parameters.

To learn how to define a rule using the Appearance attribute, refer to the Declare Conditional Appearance Rules in Code topic.