Model Binder for Byte Arrays

gistfile1.cs

    public class AnnounceResultModelBinder : IModelBinder
    {
        private ByteArrayModelBinder _byteBinder = new ByteArrayModelBinder();

        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            if (bindingContext.ModelName == "info_hash" || bindingContext.ModelName == "peer_id")
            {
                var query = controllerContext.RequestContext.HttpContext.Request.Url.Query;
                if (query.StartsWith("?")) query = query.Substring(1);

                var parts = query.Split('&')
                    .Select(pq => { var ix = pq.IndexOf('='); return new string[] { pq.Substring(0, ix), pq.Substring(ix + 1) }; })
                    .FirstOrDefault(pq => string.Equals(pq[0], bindingContext.ModelName));

                var value = parts[1];
                return HttpUtility.UrlDecodeToBytes(value);
            }
            else
            {
                return _byteBinder.BindModel(controllerContext, bindingContext);
            }
        }
    }