public void insertImage(FlickrImage image)
        {
            FlickrDataEntities dbContext = new FlickrDataEntities();

            if (!CheckImageExists(image.PhotoId))
            {
                dbContext.FlickrImages.Add(image);
                dbContext.SaveChanges();
            }
        }
        public string RegisterUser(User newuser)
        {
            string result = string.Empty;



            FlickrDataEntities dbContext = new FlickrDataEntities();

            if (!CheckIfEmailExist(newuser.Email))
            {
                dbContext.Users.Add(newuser);
                dbContext.SaveChanges();
                result = "SUCCESS";
            }
            else
            {
                result = "Email already exists";
            }
            return(result);
        }