GET and POST methods with the same Action name in the same Controller

Question

Why is this incorrect         public class HomeController   Controller                 HttpGet          public ActionResult Index                         Some Code--Some Code---Some Code             return View                        HttpPost          public ActionResult Index                         Some Code--Some Code---Some Code             return View                       How can I have a controlller thas answer one thing when is  getted  and one when is  posted

User · Answer

I like to accept a form post for my POST actions  even if I don t need it  For me it just feels like the right thing to do as you re supposedly posting something   public class HomeController   Controller       public ActionResult Index                   Code            return View                HttpPost      public ActionResult Index FormCollection form                  Code            return View

User · Answer

Can not multi action same name and same parameter       HttpGet      public ActionResult Index                 return View               HttpPost      public ActionResult Index int id                return View            althought int id is not used

User · Answer

You can t have multiple actions with the same name  You could add a parameter to one method and that would be valid  For example       public ActionResult Index int i                Some Code--Some Code---Some Code         return View            There are a few ways to do to have actions that differ only by request verb  My favorite and  I think  the easiest to implement is to use the AttributeRouting package  Once installed simply add an attribute to your method as follows      GET  Resources      public ActionResult Index             return View            POST  Resources      public ActionResult Create             return RedirectToAction  Index          In the above example the methods have different names but the action name in both cases is  Resources   The only difference is the request verb   The package can be installed using NuGet like this   PM  Install-Package AttributeRouting   If you don t want the dependency on the AttributeRouting packages you could do this by writing a custom action selector attribute

User · Answer

While ASP NET MVC will allow you to have two actions with the same name   NET won t allow you to have two methods with the same signature - i e  the same name and parameters   You will need to name the methods differently use the ActionName attribute to tell ASP NET MVC that they re actually the same action   That said  if you re talking about a GET and a POST  this problem will likely go away  as the POST action will take more parameters than the GET and therefore be distinguishable   So  you need either    HttpGet  public ActionResult ActionName           HttpPost  ActionName  ActionName    public ActionResult ActionNamePost           Or    HttpGet  public ActionResult ActionName           HttpPost  public ActionResult ActionName string aParameter

User · Answer

Since you cannot have two methods with the same name and signature you have to use the ActionName attribute    HttpGet  public ActionResult Index          your code   return View        HttpPost   ActionName  Index    public ActionResult IndexPost          your code   return View        Also see  How a Method Becomes An Action

User · Answer

You received the good answer to this question  but I want to add my two cents  You could use one method and process requests according to request type   public ActionResult Index         if  GET   this HttpContext Request RequestType                Some Code--Some Code---Some Code for GET           else if  POST   this HttpContext Request RequestType                Some Code--Some Code---Some Code for POST           else                 exception            return View

User · Answer

To answer your specific question  you cannot have two methods with the same name and the same arguments in a single class  using the HttpGet and HttpPost attributes doesn t  distinguish the methods   To address this  I d typically include the view model for the form you re posting   public class HomeController   Controller        HttpGet      public ActionResult Index                 Some Code--Some Code---Some Code         return View                HttpPost      public ActionResult Index formViewModel model                do work on model --         return View

User · Answer

Today I was checking some resources about the same question and I got an example very interesting   It is possible to call the same method by GET and POST protocol  but you need to overload the parameters like that    using  Ajax BeginForm  Index    MyController   ajaxOptions  new    id    form-consulta          code     The action    ActionName  Index    public async Task lt ActionResult gt  IndexAsync MyModel model      code     By default a method without explicit protocol is GET  but in that case there is a declared parameter which allows the method works like a POST   When GET is executed the parameter does not matter  but when POST is executed the parameter is required on your request

[c#] GET and POST methods with the same Action name in the same Controller

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