/// <summary>
        /// Overloaded. Releases the resources used by the Component.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);

            if (null != popup)
            {
                popup.Dispose();
                popup = null;
            }
        }