private new void DataToControls()
{
base.DataToControls();
if (_limit != null)
{
edtInputPort.Value = ((PathSignalDelay) _limit).inputPort;
edtOutputPort.Value = ((PathSignalDelay) _limit).outputPort;
edtFrequency.Tag = ((PathSignalDelay) _limit).Frequency;
ShowFrequencyValue();
}
}