/// <returns>elapsed time in seconds since object creation</returns>
public sealed override String ToString()
{
long endTime = DateTime.Now.Millisecond;
String duration = DiffTime(myDurationFormat, startTime, endTime);
if (myMsgFormat == null)
{
return(duration);
}
else
{
return(myMsgFormat.FormatObject(new Object[] { duration }));
}
}