Is there a way to customize the XamDataGrid Field Chooser?  I have a grid with a large number of columns and at times I only want to see a few columns.  In that scenario, it would be easier to hide all columns and then show only the columns I'm interested in rather than uncheck each field I'm not interested in from the Field Chooser.  I can Hide/Show all using separate buttons but this functionality, in my opinion, should be located in the Field Chooser.  Is there a way I can add two buttons to the Field Chooser for Show/Hide All?

Thanks,

Paul