protected virtual void RenderOptionsProperties(IHtmlWriter writer)
 {
     SelectHtmlControlHelpers.RenderOptionsProperties(writer, this);
 }
 protected virtual void RenderChangedEvent(IHtmlWriter writer)
 {
     SelectHtmlControlHelpers.RenderChangedEvent(writer, this);
 }
 protected virtual void RenderEnabledProperty(IHtmlWriter writer)
 {
     SelectHtmlControlHelpers.RenderEnabledProperty(writer, this);
 }