MVC: Send parameters to Action in Controller with Bootstrap button

Question

View:

@using (Html.BeginForm("UpdateMaterial", "MyController", FormMethod.Post, Model.MaterialId))
    {
    @Html.AntiForgeryToken()
    <input type="submit" class="btn btn-primary custom" value="Derivate Material" />
    }

Controller:

[HttpPost]
public ActionResult UpdateMaterial(int? matId)
        {
            if (matId == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
        //do something here
        }

The Id I send its always null. How do i change this?

Andrei V · Accepted Answer · 2015-06-18 20:26:00Z

1

Your Model.MaterialId should be a form element:

@using (Html.BeginForm("UpdateMaterial", "MyController", FormMethod.Post))
{
     @Html.HiddenFor(model => model.MaterialId)

     @Html.AntiForgeryToken()
     <input type="submit" class="btn btn-primary custom" value="Derivate Material" />
}

Additionally, you should change your action definition and make it accept the type of your model, instead of a int?:

[HttpPost]
public ActionResult UpdateMaterial(MyModelType model)
{
     if (model.matId == null)
     {
         return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
     }
     //do something here
}

edited Jun 18, 2015 at 20:26

answered Jun 18, 2015 at 20:20

Andrei V

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4 Comments

Aoren Over a year ago

@Html.EditorFor places an input text in the View. I want to be able to automatically send the Id to the Controller. I'm in the "Detail" View of a specific Material and I already know the MaterialId because of the model.

Andrei V Over a year ago

@Aoren, you need a hidden input for that. I updated my answer.

Aoren Over a year ago

Q: I'm sending an object of (in the case of your answer) "MyModelType" with all the specs from the Material in the View or is it just an integer?

Andrei V Over a year ago

@Aoren it really depends on what you're trying to accomplish. If you just need to send a single id, you'd be better of with AJAX or even an action link. If you want to use a form, then posting a model would be appropriate.

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