The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'system.int32' for method 'system.web.mvc.actionresult languageedit(int32)

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I have a action method in the controller CountryController.cs

C#

public ActionResult LanguageEdit(int id)
       {

Also to navigate to it,

@Html.ActionLink("Edit", "LanguageEdit", "Country", new { id = item.LanguageId }

I checked the value

item.LanguageId

It is 4. But I received the exception:

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult LanguageEdit(Int32)

Why?

What I have tried:

My route's configuration is:

routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Account", action = "Login", id = UrlParameter.Optional }
            );

Posted 25-Jun-17 3:14am

Member 12658724

Updated 26-Jun-17 0:49am

v2

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Bohdan Stupak · Accepted Answer · 2017-06-26T00:49:00

You might want to try

C#

@Html.ActionLink("Edit", "LanguageEdit", "Country", new { id = item.LanguageId }, null)

instead
If you check List of ActionLink overloads you'll see that there is none wich assepts link text, action name, controller name and route values dictionary.But there is one which accepts those params and html attributes dictionary