c# - Using BeginForm() To Upload File and passing Att' (ASP-MVC 4)

Question

I have a ASP.NET MVC 4 Project, and I need to be able to upload a file or files to save them and make an instance of that file or files( so I will be able to keep information about them).

In order to implement this I have two classes inside of 'Models':

1. UploadFile: (this class will represent a single file)

       public class UploadFile
    {
        public long ID { get; set; }
        public string Path { get; set; }

        public string Status { get; set; }

        public HttpPostedFileBase File { get; set; }
    }

2. Scan: (this class will represent a one upload of file or files)

public class Scan
{

    public IEnumerable<UploadFile> Files { get; set; }

    public long ContentLength()
    {
        long size = 0;
        foreach (UploadFile f  in Files)
        {
            size =+ f.File.ContentLength;
        }
        return size;
    }
}

also I have one controller 'HomeController.cs", and I have this action in there:

  [HttpPost]
    public ActionResult Index(Scan scan)
    {

            if (scan.ContentLength() > 0)
            {
                foreach (var s in scan.Files)
                {
                var fileName = Path.GetFileName(s.File.FileName);
                var path = Path.Combine(Server.MapPath("~/Content/UploadFiles"), fileName);
                s.File.SaveAs(path);
            }
        }

        return RedirectToAction("Index");
    }

And the View is 'index.cshtml', and this is the begin.form:

 @using (Html.BeginForm(null, null, FormMethod.Post, new { enctype = "multipart/form-data" }))
        {
            <table>
                <tr>
                    <td>File:</td>
                    <td><input type="file" name="Scan" id="Scan" multiple /></td>
                </tr>
                <tr>
                    <td>&nbsp;</td>
                    <td><input type="submit" name="submit" value="Upload" /></td>
                </tr>
            </table>
        }
            </div>

My Main Goal: upload a file/files (save them at "~/Content/UploadFiles") and during this process to create an instance of UploadFile and Scan (Scan hold a collection of UploadFile), so i can represent them to the user and keep tracking and catalog them in my DB.

My problem is that "scan" is null in 'homecontroller.cs' how can i pass argument so i could create instances of the two classes and still upload the file ?

As you may notice i'm new at MVC design-structure, so if i'm missing a point or two of MVC because of my implement let me know. Thanks.