CODEWITHSUNDEEP
c#asp.net-mvc
Vinyl Warmth
Vinyl Warmth

Reputation: 2506

Why am I getting null entry for parameter on action method?

I have a controller which has an action like this:

    [HttpPost]
    public ActionResult Assign(int reportId, List<int> clientIds)
    {

          // stuff
          return View();
    }

When I call it from the view from a table like this:

    @using (Html.BeginForm("Assign", "Report", FormMethod.Post, new { reportId = 1} ))
    {
      ...
          <input type="checkbox" name="clientIds" value="@item.Id" checked>

I'm getting an error saying

The parameters dictionary contains a null entry for parameter 'reportId' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Assign(Int32, System.Collections.Generic.List`1[System.Int32])'

As far as I can see the controller should be getting the value 1 for reportId - can anyone see where I'm going wrong?

I realise I could (should) be using a view model to get data from the client to the action but I need to do it this way for now...

Upvotes: 0

Views: 240

Answers (1)

user3559349
user3559349

Reputation:

You using the wrong overload of BeginForm()and adding reportId as a html attribute, not a route value. You need to use this overload where the 3rd parameter is object routeValues

@using (Html.BeginForm("Assign", "Report", new { reportId = 1 }, FormMethod.Post))

Upvotes: 1

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