MVC HttpPost HttpGet for Action

Question

I am using MVC C    Can somebody give an example on why one would use   HttpPost HttpGet     for an Action  How can an active have both - what is the practical use

User · Answer

You don t need to specify both at the same time  unless you re specifically restricting the other verbs  i e  you don t want PUT or DELETE  etc    Contrary to some of the comments  I was also unable to use both Attributes  HttpGet  HttpPost  at the same time  but was able to specify both verbs instead   Actions      private ActionResult testResult int id                return Json new                                  user input                             input   id                                 just so there s different content in the response                             when   DateTime Now                                 type of request                             req   this Request HttpMethod                                 differentiate calls in response  for matching up                             call   new StackTrace   GetFrame 1  GetMethod   Name                                                    JsonRequestBehavior AllowGet             public ActionResult Test int id                return testResult id              HttpGet      public ActionResult TestGetOnly int id                return testResult id              HttpPost      public ActionResult TestPostOnly int id                return testResult id              HttpPost  HttpGet      public ActionResult TestBoth int id                return testResult id              AcceptVerbs HttpVerbs Get   HttpVerbs Post       public ActionResult TestVerbs int id                return testResult id           Results  via POSTMAN  formatting by markdowntables    Method      URL                     Response                                                                                     --------    ----------------------  ----------------------------------------------------------------------------------------       GET          ctrl test 5               input   5   when     Date 1408041216116      req    GET    call    Test                    POST         ctrl test 5               input   5   when     Date 1408041227561      req    POST    call    Test                   PUT          ctrl test 5               input   5   when     Date 1408041252646      req    PUT    call    Test                    GET          ctrl testgetonly 5        input   5   when     Date 1408041335907      req    GET    call    TestGetOnly             POST         ctrl testgetonly 5     404                                                                                           PUT          ctrl testgetonly 5     404                                                                                           GET          ctrl TestPostOnly 5    404                                                                                           POST         ctrl TestPostOnly 5       input   5   when     Date 1408041464096      req    POST    call    TestPostOnly           PUT          ctrl TestPostOnly 5    404                                                                                           GET          ctrl TestBoth 5        404                                                                                           POST         ctrl TestBoth 5        404                                                                                           PUT          ctrl TestBoth 5        404                                                                                           GET          ctrl TestVerbs 5          input   5   when     Date 1408041709606      req    GET    call    TestVerbs               POST         ctrl TestVerbs 5          input   5   when     Date 1408041831549      req    POST    call    TestVerbs              PUT          ctrl TestVerbs 5       404

User · Answer

Let s say you have a Login action which provides the user with a login screen  then receives the user name and password back after the user submits the form   public ActionResult Login         return View       public ActionResult Login string userName  string password           do login stuff     return View        MVC isn t being given clear instructions on which action is which  even though we can tell by looking at it  If you add  HttpGet  to the first action and  HttpPost  to the section action  MVC clearly knows which action is which    Why  See Request Methods  Long and short  When a user views a page  that s   a GET request and when a user submits a form  that s usually a POST request  HttpGet and HttpPost just restrict the action to the applicable request type    HttpGet  public ActionResult Login         return View        HttpPost  public ActionResult Login string userName  string password           do login stuff     return View        You can also combine the request method attributes if your action serves requests from multiple verbs    AcceptVerbs HttpVerbs Get   HttpVerbs Post

User · Answer

You cant combine this to attributes   But you can put both on one action method but you can encapsulate your logic into a other method and call this method from both actions   The ActionName Attribute allows to have 2 ActionMethods with the same name    HttpGet  public ActionResult MyMethod         return MyMethodHandler        HttpPost   ActionName  MyMethod    public ActionResult MyMethodPost         return MyMethodHandler       private ActionResult MyMethodHandler            handle the get or post request     return View  MyMethod

User · Answer

In Mvc 4 you can use AcceptVerbsAttribute  I think this is a very clean solution   AcceptVerbs WebRequestMethods Http Get  WebRequestMethods Http Post   public IHttpActionResult Login           Login logic

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