Mvvmcross WithFormat() not firing

Question

I'm trying to formatting a byte[] to a string for displaying in IOs application, here what The problem is that the Converter never fires up I actually have:

Converter class

class ByteArrayToTextValueConverter : MvxValueConverter<byte[], string>
{

    protected override string Convert(byte[] value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value is byte[])
        {
            return "test";
            /*
            var byteArray = (byte[])value;
            return Encoding.UTF8.GetString(byteArray, 0, byteArray.Length);
             */
        }
        return "";
    }

    protected override byte[] ConvertBack(string value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value is string)
        {
            var text = (string)value;
            return Encoding.UTF8.GetBytes(text);
        }
        return new byte[] { };
    }
}

View scrap:

var source = new MvxSimpleTableViewSource(
    TableView,
    SubtitleDetailViewCell.Key,
    SubtitleDetailViewCell.Key
);
TableView.Source = source;
TableView.RowHeight = 50;

TableView.RegisterClassForCellReuse(typeof(SubtitleDetailViewCell), SubtitleDetailViewCell.Key);

var set = this.CreateBindingSet<ObservationsView, ObservationsViewModel>();
set.Bind(source).To(vm => vm.Observations);
//set.Bind(source).For(s => s.SelectionChangedCommand).To(vm => vm.SelectedObsCommand);
set.Apply();

TableView.ReloadData();

Custom cell class:

public SubtitleDetailViewCell(IntPtr handle)
    : base(handle)
{
    Initialize();

    this.DelayBind(() =>
    {
        var set = this.CreateBindingSet<SubtitleDetailViewCell, ObservationMedicale>();
        set.Bind(MainLbl).To(observation => observation.Texte).WithConversion("ByteArrayToText");
        set.Bind(SubLeftLbl).To(observation => observation.SaisieLe);
        set.Bind(SubRightLbl).To(observation => observation.PraticienNom);
        set.Apply();

    });
}

Answer 1

This might be as simple as the fact that your ByteArrayToTextValueConverter is internal rather than public - so MvvmCross doesn't have permission to access it.

If you do want to keep it internal, then you can also use the alternative format of WithConversion:

  .WithConversion(new ByteArrayToTextValueConverter(), null);

---

Beyond that, I'm also unsure why you would apply the ByteArrayToText conversion on the list of Observations - it looks more like the source should be a collection of ObservationMedicale objects