BsonDocument to Json string

BsonToJson.cs

// This method convert a json to a valid string json
// It should handle all mongodb data types correctly (Date, ObjectId, ...) thanks to the
// Newtonsoft.Json.Bson.BsonReader serializer

public string ToJson(BsonDocument bson)
{
	using (var stream = new MemoryStream())
	{
		using (var writer = new BsonBinaryWriter(stream))
		{
			BsonSerializer.Serialize(writer, typeof(BsonDocument), bson);
		}
		stream.Seek(0, SeekOrigin.Begin);
		using (var reader = new Newtonsoft.Json.Bson.BsonReader(stream))
		{
			var sb = new StringBuilder();
			var sw = new StringWriter(sb);
			using (var jWriter = new JsonTextWriter(sw))
			{
				jWriter.DateTimeZoneHandling = DateTimeZoneHandling.Utc;
				jWriter.WriteToken(reader);
			}
			return sb.ToString();
		}
	}
}

{"dvd":"sdfsd"}