User54879 postedBy the way, in the current version of Xamarin.Forms you should create a separate class to implement value converter. I use the extension to write value converters as lambda expressions. So you can make binding like this:
cell.SetBinding<YourModel>(TextCell.TextColorProperty, c => c.IsRed, BindingMode.Default,
ValueConverter.OneWay<bool,Color>((isRead) => isFav ? Color.Red : Color.Black));
Extension class:
public class ValueConverter
{
public static IValueConverter OneWay<TFrom,TTo>(Func<TFrom,TTo> converter)
{
return new ValueConverterImpl<TFrom,TTo>(converter, null);
}
public static IValueConverter TwoWay<TFrom,TTo>(Func<TFrom,TTo> converter, Func<TTo,TFrom> backConverter)
{
return new ValueConverterImpl<TFrom,TTo>(converter, backConverter);
}
private class ValueConverterImpl<TSource,TDestination> : IValueConverter
{
private Func<TSource, TDestination> _converter;
private Func<TDestination,TSource> _backConverter;
public ValueConverterImpl(Func<TSource,TDestination> converter, Func<TDestination,TSource> backConverter)
{
_converter = converter;
_backConverter = backConverter;
}
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return _converter((TSource)value);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (_backConverter == null)
throw new NotImplementedException();
return _backConverter((TDestination)value);
}
}
}
