MyLookUpEdit.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using DevExpress.XtraEditors.Registrator;
using DevExpress.XtraEditors;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraEditors.Popup;

namespace WindowsApplication1 {
    public class UserLookUpEdit : LookUpEdit {

        static UserLookUpEdit() {
            RepositoryItemUserLookUpEdit.Register();
        }

        public UserLookUpEdit() {
        }

        public override string EditorTypeName { get { return "UserLookUpEdit"; } }

        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public new RepositoryItemUserLookUpEdit Properties {
            get { return base.Properties as RepositoryItemUserLookUpEdit; }
        }
        protected override DevExpress.XtraEditors.Popup.PopupBaseForm CreatePopupForm() {
            return new UserPopupLookUpEditForm(this);
        }
    }

    [UserRepositoryItem("Register")]
    public class RepositoryItemUserLookUpEdit : RepositoryItemLookUpEdit {
        static RepositoryItemUserLookUpEdit() {
            Register();
        }
        public RepositoryItemUserLookUpEdit() { }

        public static void Register() {
            EditorRegistrationInfo.Default.Editors.Add(new EditorClassInfo("UserLookUpEdit", typeof(UserLookUpEdit),
                typeof(RepositoryItemUserLookUpEdit), typeof(DevExpress.XtraEditors.ViewInfo.LookUpEditViewInfo),
                new DevExpress.XtraEditors.Drawing.ButtonEditPainter(), true));
        }

        [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public override string EditorTypeName { get { return "UserLookUpEdit"; } }
    }

    public class UserPopupLookUpEditForm : PopupLookUpEditForm {

        public UserPopupLookUpEditForm(LookUpEdit owner)
            : base(owner) {
            fCloseButtonStyle = BlobCloseButtonStyle.None;
        }
    }

}