Question

I’ve got 2 views: Question and Answer. From the Question View, Detail Action I wanna redirect to Answer View, Create Action, so I’ve placed:

@Html.ActionLink(Model.QuestionId.ToString(), "Create", "Answer", "Answer", new { id = Model.QuestionId })

and in Answer View:

public ActionResult Create(string id)
{
    (...)
    return View();
} 

But the id in Create(string id) is always null. How can I pass this value properly?

Answer 1

You are using a wrong overload of the ActionLink helper. It should be:

@Html.ActionLink(
    Model.QuestionId.ToString(),     // linkText
    "Create",                        // actionName
    "Answer",                        // controllerName
    new { id = Model.QuestionId },   // routeValues
    null                             // htmlAttributes
)

which would generate

<a href="/answer/create/123">123</a>

---

whereas you are using:

@Html.ActionLink(
    Model.QuestionId.ToString(),     // linkText
    "Create",                        // actionName
    "Answer",                        // controllerName
    "Answer",                        // routeValues
    new { id = Model.QuestionId }    // htmlAttributes
)

which generates:

<a href="/Answer/Create?Length=6" id="123">123</a>

I think that now it’s not difficult to understand why your anchor doesn’t work.