Unable to upload a file to SQL Server using Entity Framework in ASP.net MVC

I'm using ASP.NET MVC and Entity Framework code-first approach. I want to upload a file (.doc or .pdf) to a SQL Server. I have searched and browsed through many forums but couldn't find a definite solution for uploading a file to SQL Server using Entity Framework code-first approach.

I have written the following code to upload a file but am getting an error while saving the file to database.

Here is the following code

The controller is :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;
using FileuploadEF.Models;
namespace FileuploadEF.Controllers
{
    public class HomeController : Controller
    {
        FileEntities db = new FileEntities();

        public ActionResult Index()
        {
             return View();
        }

        public ActionResult About()
        {
            return View();
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult upload()
        {
            foreach (string file in Request.Files)
            {
                var PostedFile = Request.Files[file];
                string filetype = Request.Files[file].ContentType;
                int filelength = Request.Files[file].ContentLength;
                Stream filestream = Request.Files[file].InputStream;
                byte[] filedata = new byte[filelength];
                string filename= Path.GetFileName(Request.Files[file].FileName);
                filestream.Read(filedata, 0, filelength);
                var data = new FileDump
                {
                    FileName = filename,
                    FileType = filetype,
                    FileContent = filedata
                };

                  db.FileDumps.Add(data);

                db.SaveChanges();
            }

            return View();
        }

    }
}

The class filedump for creating database is :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace FinaleuploadEF.Models
{
    public class FileDump
    {
        public int Id { get; set; }
        public string FileName { get; set; }
        public string FileType { get; set; }
        public byte[] FileContent { get; set; }
    }
}

The entities class is :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;

namespace FinaleuploadEF.Models
{
    public class FinalEntities : DbContext
    {
        public DbSet<FileDump> FileDumps { get; set; }

    }
}

The connection string:

 <connectionStrings>
      <add name="FinalEntities"
       connectionString="Data Source=|DataDirectory|FinaleuploadEF.sdf"
       providerName="System.Data.SqlServerCe.4.0"/>
    </connectionStrings>

I am getting the following error while saving a file to the database:

www.freeimagehosting.net/kmwts

Can anyone please suggest a solution for the above problem? Or any changes required in the above code?