The support for ICustomTypeProvider will make our lives lot easier.

Infact, I was also thinking if we could log a new feature request in Infragistics roadmap, if there's no such plan already?

I don't really see the need for a feature request.  ICustomTypeProvider is now part of standard binding in Silverlight.  Infragistics can either support it or become increasing irrelevant.

From their current success I doubt they will make a choice that leads to their decline.

Point taken, and supported as well.

Infact, I was surprised that this was not supported at the first place, considering the fact that Microsoft Silverlight Grid supports that interface seamlessly.

Hmmm.

The workaround does not seem to work.  I am adding unbound columns with the Key set, but the value never displays :(

The one unbound column I set with a normal property works fine.

Ok I got this to work from code...messy.

1)  Add the unbound column with the Key set.

2) Create a datatemplate in code that binds to the property.

3) Assign the datatemplate to the unbound column

4) In my case I have a default unnamed datatemplate in xaml for the datatype, the runtime resource locates this datatemplate.

The code to create the data template is:  ( I am still expiermenting to see if I can refer to existing datatemplates using StaticResource...)

        private DataTemplate TemplateForResult(string prop)

        {

            const string basetemp = @"<DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"" " +

                @"xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">"+

            @"<ContentPresenter Content=""{Binding RowData.[PROPERTY]}""/> "+

             @"</DataTemplate>";

            var final = basetemp.Replace("[PROPERTY]", prop);

            return (DataTemplate) XamlReader.Load(final);

        }