// Developer Express Code Central Example:

// How to: Disable Property Editors Based on a Business Rule

//

// This example demonstrates how to hide and disable property editors via the

// Conditional Appearance module (the obsolete Conditional Editor State module is

// used in versions prior to 11.2). The complete description is available in the

// How to: Disable Property Editors Based on a Business Rule

// (ms-help://DevExpress.Xaf/CustomDocument3221.htm) help topic.

//

// You can find sample updates and versions for different programming languages here:

// http://www.devexpress.com/example=E1672

using System;

using System.ComponentModel;

using DevExpress.Xpo;

using DevExpress.Data.Filtering;

using DevExpress.ExpressApp;

using DevExpress.Persistent.Base;

using DevExpress.Persistent.BaseImpl;

using DevExpress.Persistent.Validation;

using DevExpress.ExpressApp.ConditionalAppearance;

using DevExpress.ExpressApp.Editors;

namespace EditorStateExample.Module {

    [DefaultClassOptions]

    [ImageName("BO_Person")]

    public class Contact : BaseObject {

        public Contact(Session session) : base(session) { }

        public string Name {

            get { return GetPropertyValue<string>("Name"); }

            set { SetPropertyValue<string>("Name", value); }

        }

        [ImmediatePostData]

        public bool IsMarried {

            get { return GetPropertyValue<bool>("IsMarried"); }

            set { SetPropertyValue<bool>("IsMarried", value); }

        }

        [Appearance("Single", Visibility = ViewItemVisibility.Hide, Criteria = "!IsMarried", Context="DetailView")]

        public string SpouseName {

            get { return GetPropertyValue<string>("SpouseName"); }

            set { SetPropertyValue<string>("SpouseName", value); }

        }

        [ImmediatePostData]

        public string Address1 {

            get { return GetPropertyValue<string>("Address1"); }

            set { SetPropertyValue<string>("Address1", value); }

        }

        [Appearance("AddressOneIsEmpty", Enabled = false, Criteria = "IsNullOrEmpty(Address1)")]

        public string Address2 {

            get { return GetPropertyValue<string>("Address2"); }

            set { SetPropertyValue<string>("Address2", value); }

        }

    }

}