public void EditProduct(string id, string name, int price)
        {
            MongodbFunctions mongo = new MongodbFunctions();

            ObjectId objID = new ObjectId(id);

            var    picture = Request.Files["picture"];
            string path;

            if (picture != null)
            {
                string savePath = System.IO.Path.Combine(Server.MapPath("~/Resources"), name + System.IO.Path.GetExtension(picture.FileName));
                picture.SaveAs(savePath);
                path = name + System.IO.Path.GetExtension(picture.FileName);
            }
            else
            {
                Databases.DomainModel.Product product = mongo.GetProduct(objID);
                path = product.Picture;
            }
            mongo.UpdateProduct(objID, name, price, path);
        }