public object ConvertBack(object value, Type targetType, object parameter, string language)
{
double fromValue = System.Convert.ToDouble(value);
Tuple <ISensorItem, IGaugeItem> tuple = (Tuple <ISensorItem, IGaugeItem>)parameter;
if (tuple.Item2.GaugeType == GaugeTypeEnum.TextControl)
{
return(fromValue);
}
Units fromUnits = (Units)tuple.Item1.SensorUnits;
Units toUnits = (Units)tuple.Item2.Units;
if (fromUnits == toUnits)
{
return(fromValue);
}
UnitItem fromUnitItem = UnitsConverter.Find(fromUnits);
UnitItem toUnitItem = UnitsConverter.Find(toUnits);
return(UnitsConverter.Convert(toUnitItem, fromUnitItem, fromValue));
}