public ActionResult ComboboxFor(ComboboxModel model)
 {
     //posted value is obtained from the model
     model.data = datasource;
     model.val  = model.val;
     return(View(model));
 }
        public ActionResult ComboboxFor()
        {
            ComboboxModel model = new ComboboxModel();

            model.data = datasource;
            model.val  = "Badminton";
            return(View(model));
        }