PostToCosm2

public static string CreateDatapoint(string feedId, string datastreamId, string value)
{
    string url = string.Format("http://api.cosm.com/v2/feeds/{0}/datastreams/{1}/datapoints", feedId, datastreamId);
    var datapoints = new {datapoints = new[] {new {at = DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ"), value}}};
    var datapointsJson = new JavaScriptSerializer().Serialize(datapoints);
    
    var webClient = new WebClient();
    webClient.Headers.Set("X-ApiKey", "KbI9MZtLvhaOuAi0DKXWzc4UZk-SAKxhQjd3MHJtd2ZwYz0g");
    return webClient.UploadString(url, "POST", datapointsJson);
}