// POST api/imagedata
 public void Post(ImageData image)
 {
     using (var store = ObjectStore.GetInstance<ImageData>())
     {
             image.IsValid = true;
             store.SaveOnSubmit(image);
     }
 }
        // PUT api/imagedata/5
        public void Put(string id, ImageData value)
        {
            using (var store = ObjectStore.GetInstance<ImageData>())
            {
                value.IsValid = true;
                store.SaveOnSubmit(value);

            }
        }