ActionResult Return Type in MVC

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                                ActionResult Return Type


                  When we create an Action method in the controller so ActionResult  is the return type of 
                  method 

                    public class LearnController: Controller
                    {
                       // GET: Learn
                        public ActionResult Index()
                        {
                            ViewBag.Title = "Learn Controller";
                             return View();
                          }
                      }

                     above we can see the index method in which return type is ActionResult.
                     that means all action methods are derived from ActionResult class.
                     so ActionResult  is base class for all action method



                 Types of Action Result 

                1) ViewResult:- 
                   When we use ViewResult in the method then method responsibility is to render 
                   View to a browser.  

                  public ViewResult Index()
                        {
                            ViewBag.Title = "Learn Controller";
                             return View();
                          }

                 2) PartialViewResult:- 
                    When we use PartialviewResult instead of ActionResult then the method 
                     responsibility is to render a partial view.
                     

                     public PartialViewResult Index()
                        {
                            ViewBag.Title = "Learn Controller";
                             return PartialView("partialviewName");
                          }

                 3) RedirectResult:- 
                    When we use RedirectResult instead of ActionResult then method responsibility 
                     is to redirect to another action by URL.
                     
                    

                    public RedirectResult Index()
                        {
                            ViewBag.Title = "Learn Controller";
                             return Redirect("www.test.com");
                          }

                4) RedirectToRouteResult:- 
                     When we use RedirectToRouteResult instead of ActionResult then method
                     responsibility is to redirect to another action by routes .
                     
                    public ActionResult Index()
                       {
                        return new RedirectToRouteResult(new                                                                                                        System.Web.Routing.RouteValueDictionary(new { controller = "Learn",
                        action = "GetName", Id = new int? () }));
                       }

                5) ContentResult:-
                   When we use ContentResult instead of ActionResult then method responsibility is
                    to return plain text.

                   public ContentResult Index()
                     {
                       return Content("Hello this is Index method!");
                     }

               6) JsonResult:- 
                     When we use JsonResult instead of ActionResult then method responsibility is
                    to return data in JSON.
                  
                     public JsonResult Index()
                     {
                    return Json("Hello this is Index method!");
                      }

            7) FileResult:-
                  When we use FileResult instead of ActionResult then method responsibility is 
                   to return file means if you want to download file then we can use file result.

                 public FileResult Index()
                  {
                    return new FilePathResult("path to download file");
                  }

            8) EmptyResult:-
                  When we  use EmptyResult instead of ActionResult then method responsibility is
                  to return the null result.
                  
                   public EmptyResult Index()  
                    {  
                            return new EmptyResult();  
                     } 


               

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