.NET Core 3.0+
.NET Framework 4.5.2+
.NET Standard 2.0+
.NET Core 3.0+

AppearanceAttribute.Enabled Property

Specifies whether to enable UI elements affected by the conditional appearance rule generated from this attribute instance.

Namespace: DevExpress.ExpressApp.ConditionalAppearance

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


public bool Enabled { get; set; }
Public Property Enabled As Boolean

Property Value

Type Description

true, if UI elements affected by the conditional appearance rule must be enabled; otherwise, false.


The following UI elements can be made disabled/enabled:

  • Data cells in a GridListEditor and ASPxGridListEditor when switching to the inline editing mode
  • Property Editors that are inherited from the PropertyEditor class.
  • Actions

You can find many examples in the Declare Conditional Appearance Rules in Code topic. See these examples in the Feature Center demo installed with the eXpressApp Framework, or refer to the Feature Center demo online.

The example below demonstrates how to disable the NickName property editor in the Contact Detail View.

using System;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl;
// ...
public class Contact : Person, IMapsMarker {
// ...
    [Appearance("NickNameDisabled", Context = "Contact_DetailView", AppearanceItemType = "ViewItem", Enabled = false)]
    public string NickName {
        get {
            return nickName;
        set {
            SetPropertyValue(nameof(NickName), ref nickName, value);
See Also