I've been tearing out my hair trying to figure out how I can make the card view area size itself dynamically to show all its cards at once instead of just the first line.  I've tried setting MaxCardAreaRows, but the cards always line up on one row anyway -- possibly because I'm in GroupBy mode?  (Users can still resize the card area manually by dragging, though, so it seems like I ought to be able to do this from code.)

The documentation says, "Card view replaces the band in the grid, with the space occupied by the band being replaced by the card view area which contains the cards. The card view area has a fixed vertical height (which can be changed by you or the user) and scrolls horizontally to display the cards that make up the band."  So I know it's possible, I just can't seem to find the right set of properties.