PropertyGrid DropDownListEditor using a collection as datasource instead of standar values

        public RadForm1()
        {
            InitializeComponent();

            this.radPropertyGrid1.SelectedObject= new Item(123,"Telerik", DeliveryType.Delivery);
        }

        public class Item
        {
            public int Id { get; set; }

            public string Title { get; set; }

            public DeliveryType DeliveryMethod { get; set; }

            public Item(int id, string title, DeliveryType deliveryMethod)
            {
                this.Id = id;
                this.Title = title;
                this.DeliveryMethod = deliveryMethod;
            }
        }

        public enum DeliveryType
        { 
            PickUp,
            Delivery
        }

        private void radPropertyGrid1_EditorRequired(object sender, PropertyGridEditorRequiredEventArgs e)
        {
            if (e.Item.Label == "Title")
            {
                PropertyGridDropDownListEditor editor = new PropertyGridDropDownListEditor();
                BaseDropDownListEditorElement element = editor.EditorElement as BaseDropDownListEditorElement;
                element.DataSource = new List<string>() { "WinForms", "WPF", "Reporting" };
                e.Editor = editor;
            }
        }