public ActionResult ProfilPicture(int userId, HttpPostedFileBase pic)
        {
            if (Session["UserName"] == null)
            {
                return(RedirectToAction("Error"));
            }


            if (pic != null && pic.ContentLength > 0)
            {
                var           fileName     = Path.GetFileName(pic.FileName);
                List <string> imgExtension = new List <string>(new string[] { ".gif", ".png", ".PNG", ".jpg", ".jpeg", ".bmp", ".tiff" });

                string extension = Path.GetExtension(fileName);
                if (imgExtension.Contains(extension))
                {
                    var path = Path.Combine(Server.MapPath("~/Content/images/profil"), userId.ToString() + fileName);

                    if (!System.IO.File.Exists(fileName))
                    {
                        pic.SaveAs(path);
                    }

                    string profilPicUrl = "~/Content/images/profil/" + userId.ToString() + Path.GetFileName(pic.FileName);
                    Session["UserPic"] = profilPicUrl;

                    KoombuBll kBll = new KoombuBll();
                    kBll.AddProfilPic(userId, profilPicUrl);
                }
            }
            return(RedirectToAction("Profil", new { id = userId }));
        }