yes

we can overload a action method .it's work fine at the compile time but at run time browser show the error of ambiguity in action methodExample[HttpGet]public ActionResult Index (){return view();}[HttpGet]public ActionResult Index (int a) {return view();}// This code generated ambiguity of action method because HTTP doesnt understand Polymorphism it search the ControllerName/ActionName ....and here two mathod with same name exist so it reflect error to request a View . At the compile time it work well because C# support Polymorphism Solution : - [HttpGet]public ActionResult Index (){return view();}[HttpGet][ActionName("IndexNew")]public ActionResult Index (int a) {return view();}its work well but request would be ControllerName/IndexNew