//I'm halfway there.
string date = FormatDateTime(myDate, "yyyyMMdd"));
string time = FormatDateTime(myTime, "HHmm"));
 
 
        private string FormatDateTime(string dateortime, string outputformat)
        {
            string ret = "";
            if (dateortime == "")
                return "";
            try
            {
                ret = System.Convert.ToDateTime(dateortime).ToString(outputformat);
            }
            catch
            {
            }
            return ret;
        }