Add a event to Google Calendar dynamically

hlGoogle.NavigateUrl = string.Format(
    "https://www.google.com/calendar/render?action=TEMPLATE&text={0}&dates={1:yyyyMMddTHHmmss}/{2:yyyyMMddTHHmmss}&sprop=website:{3}&location={4}&details={5}",
    EventName,
    Convert.ToDateTime(FromDate),
    Convert.ToDateTime(ToDate),
    Request.Url.Host,
    Location,
    Details
);