///<summary>Updates local time and Refreshes all time variables.  Saves NIST server URL as preference.</summary>
        private void SynchTimes()
        {
            this.Cursor = Cursors.WaitCursor;
            //Get NistTime Offset
            double nistOffset = GetNistOffset();

            if (nistOffset == double.MaxValue)            //Timed out
            {
                MsgBox.Show(this, "No response received from NIST time server.  Click synch time after four seconds.");
                this.Cursor = Cursors.Default;
                return;
            }
            if (nistOffset == double.MinValue)            //Invalid Nist Server Address
            {
                this.Cursor = Cursors.Default;
                return;
            }
            double serverOffset = (MiscData.GetNowDateTimeWithMilli() - DateTime.Now).TotalMilliseconds;

            //Get current times from offsets
            _timeLocal  = DateTime.Now;
            _timeServer = _timeLocal.AddMilliseconds(serverOffset);
            _timeNist   = _timeLocal.AddMilliseconds(nistOffset);
            try {
                WindowsTime.SetTime(_timeNist);                 //Sets local machine time
            }
            catch {
                MsgBox.Show(this, "Error setting local machine time.");
            }
            _timeLocal  = DateTime.Now;          //Update time since it has now been set
            this.Cursor = Cursors.Default;
            refreshDisplays();
        }
        ///<summary>Called from FormOpenDental.Load.  Updates local time and checks to see if server time is in synch, with a fast db call (only acurate to seconds, not miliseconds).</summary>
        public bool TimesInSynchFast()
        {
            this.Cursor      = Cursors.WaitCursor;
            textNistUrl.Text = PrefC.GetString(PrefName.NistTimeServerUrl);
            double nistOffset = GetNistOffset();

            if (nistOffset == double.MaxValue)            //Timed out
            {
                MsgBox.Show(this, "No response received from NIST time server.  Click synch time after four seconds.");
                this.Cursor = Cursors.Default;
                return(false);
            }
            if (nistOffset == double.MinValue)            //Invalid Nist Server Address
            {
                this.Cursor = Cursors.Default;
                return(false);
            }
            //Get current times from offsets
            _timeLocal = DateTime.Now;
            Stopwatch stopwatch = new Stopwatch();             //Used to keep NIST time in time even when system fails to set local machine time (Can't pull it later)

            stopwatch.Start();
            _timeNist = _timeLocal.AddMilliseconds(nistOffset);
            try {
                WindowsTime.SetTime(_timeNist);                 //Sets local machine time
            }
            catch {
                MsgBox.Show(this, "Error setting local machine time.");
            }
            _timeLocal = DateTime.Now;                                                     //Update time since it has now been set
            double serverOffset = (MiscData.GetNowDateTime() - DateTime.Now).TotalSeconds; //Cannot get milliseconds from Now() in Mysql Pre-5.6.4, Only gets whole seconds.

            _timeServer = _timeLocal.AddSeconds(serverOffset);
            if (ServerInSynchFast() && LocalInSynch())              //All times in synch
            {
                return(true);
            }
            //Some times out of synch, so form will open, but we don't want to make another call to NIST server.
            serverOffset = (MiscData.GetNowDateTimeWithMilli() - DateTime.Now).TotalSeconds;         //_timeServer needs to be more accurate before displaying
            _timeLocal   = DateTime.Now;
            stopwatch.Stop();
            _timeServer = _timeLocal.AddSeconds(serverOffset);
            _timeNist   = _timeNist.AddMilliseconds(stopwatch.ElapsedMilliseconds);
            this.Cursor = Cursors.Default;
            return(false);
        }