public void SerializeToStream(System.IO.Stream stream)
{
Dictionary<string, object> col = new Dictionary<string, object>();
col.Add("items", items);
var baseStream = new System.IO.MemoryStream();
var serializer = new Newtonsoft.Json.JsonSerializer();
var sw = new StreamWriter(stream);
var jsonTextWriter = new JsonTextWriter(sw);
serializer.Serialize(jsonTextWriter, col);
jsonTextWriter.Flush();
}