// From string to numeric (for the view model)
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
#if FORCE_NULLABLE_DOUBLE
var valueEntered = ConvertValueToString(value);
if (valueEntered.IsNotEmpty() && double.TryParse(valueEntered, out var valueAsDouble))
{
return(valueAsDouble as double?);
}
#else
if (ConvertBackFunc.IsNotNullOrDefault())
{
return(ConvertBackFunc(ConvertValueToString(value)));
}
#endif
return(default);
public TypedValueConverterBase(ConvertFunc convertFunc, ConvertBackFunc convertBackFunc = null)
{
_convertFunc = convertFunc;
_convertBackFunc = convertBackFunc;
}