Facebook.FacebookClient.ToDictionary C# (CSharp) Method

        private static IDictionary<string, object> ToDictionary(object parameters, out IDictionary<string, FacebookMediaObject> mediaObjects, out IDictionary<string, FacebookMediaStream> mediaStreams)
        {
            mediaObjects = new Dictionary<string, FacebookMediaObject>();
            mediaStreams = new Dictionary<string, FacebookMediaStream>();

            var dictionary = parameters as IDictionary<string, object>;

            // todo: IEnumerable<KeyValuePair<T1,T2>> and IEnumerable<Tuple<T1, T2>>

            if (dictionary == null)
            {
                if (parameters == null)
                    return null;

                // convert anonymous objects / unknown objects to IDictionary<string, object>
                dictionary = new Dictionary<string, object>();
#if TYPEINFO
                foreach (var propertyInfo in parameters.GetType().GetTypeInfo().DeclaredProperties.Where(p => p.CanRead))
                {
                    dictionary[propertyInfo.Name] = propertyInfo.GetValue(parameters, null);
                }
#else
                foreach (var propertyInfo in parameters.GetType().GetRuntimeProperties())
                {
                    if (!propertyInfo.CanRead) continue;
                    dictionary[propertyInfo.Name] = propertyInfo.GetValue(parameters, null);
                }
#endif
            }

            foreach (var parameter in dictionary)
            {
                if (parameter.Value is FacebookMediaObject)
                    mediaObjects.Add(parameter.Key, (FacebookMediaObject)parameter.Value);
                else if (parameter.Value is FacebookMediaStream)
                    mediaStreams.Add(parameter.Key, (FacebookMediaStream)parameter.Value);
            }

            foreach (var mediaObject in mediaObjects)
                dictionary.Remove(mediaObject.Key);

            foreach (var mediaStream in mediaStreams)
                dictionary.Remove(mediaStream.Key);

            return dictionary;
        }