When working with grid column templates, it would be incredibly helpful if you could filter by the content of the cell itself rather than be restricted to a field that is a part of the model. Considering that the main use case of a template is to display something in a different format from how it appears on the model I think it's fair to say that most users would then expect to be able to filter the text they see rather than some value behind the scenes.

This has been problematic for example when trying to show data from a separate object by joining on a common ID value via the template. I understand one option would be to create a separate view model for the purposes of the grid but that potentially adds additional complexity to a project just to add some basic text filtering.

One workaround I've implemented for now is to use the OnRead event to manually filter the initial collection of data for my templated columns. I use a dictionary to map id values to my desired display text and then filter using LINQ. This is workable but again adds a lot of extra steps for something that would ideally be much simpler.

Thanks,

Kevin