Create TimeStamp for file name

Most often, when creating files directly in Dynamics 365FO or Dynamics AX, you need to add a timestamp to the file name.
A quick way to do this is the following method:

    /// <summary>
    /// create TimeStamp string
    /// </summary>
    /// <returns>timestamp string</returns>
    private str getTimeStamp()
    {
        int time;
        str s;        

        time = timenow();
        s = date2Str(today(),
                      321,
                      DateDay::Digits2,
                      DateSeparator::None, // no separator
                      DateMonth::Digits2,
                      DateSeparator::None, // no separator
                      DateYear::Digits4
                    );

        return  s + "_" +
          num2str0(time div 3600       ,2,0,0,0) + "_" +
          num2Str0(time mod 3600 div 60,2,0,0,0) + "_" +
          num2Str0(time mod 3600 mod 60,2,0,0,0);
    }

On Dyn365, to avoid BP errors you can use the following code snippet:

time = DateTimeUtil::getTimeNow(DateTimeUtil::getUserPreferredTimeZone());