I am trying to render a form on a in a view and am using the BeginUmbracoForm extension, but it does not work as expected.

The code is as follows:

@using (Html.BeginUmbracoForm("Index", "UploadSurface", new  { enctype = "multipart/form-data", id = "fileupload"}))

since I need to set the id and enctype put the output is rendered as:

<form action="/shop/upload" method="post"> 

without he enctype and id.

What am I doing wrong?

/Kristian