private void rs2_RangeDragCompleted(object sender, RangeDragCompletedEventArgs <double> e)
        {
            if (!IsInitialized || !this.ChkHandleRangeDragCompleted3.IsChecked.GetValueOrDefault(false))
            {
                return;
            }

            AddLogText(this.TxtLog4, "RangeDragCompleted: [" + e.OldStartValue.ToString("F4") + ".." + e.OldEndValue.ToString("F4") + "] -> [" +
                       e.NewStartValue.ToString("F4") + ".." + e.NewEndValue.ToString("F4") + "]");
        }
        private void rs3_RangeDragCompleted(object sender, RangeDragCompletedEventArgs <DateTime> e)
        {
            if (!IsInitialized || !this.ChkHandleRangeDragCompleted4.IsChecked.GetValueOrDefault(false))
            {
                return;
            }

            const string frmt = "d-M-yyyy H:m:s";

            AddLogText(this.TxtLog5, "RangeDragCompleted: [" + e.OldStartValue.ToString(frmt) + ".." + e.OldEndValue.ToString(frmt) + "] -> [" +
                       e.NewStartValue.ToString(frmt) + ".." + e.NewEndValue.ToString(frmt) + "]");
        }