private void appendReqSuggTimeString()
{
TimeSpan span = endReqSuggTime.Subtract(startReqSuggTime);
int totalSecs = span.Minutes * 60 + span.Seconds;
String endReqSuggTimeStr = endReqSuggTime.ToString("HH:mm:ss");
logContent += "REQ SUGG TIME," + totalSecs + "," + endReqSuggTimeStr + "\r";
Debug.WriteLine("REQ SUGG TIME," + totalSecs + "," + endReqSuggTimeStr + "\r");
}