It is possible to change these properties of the CardView in GridControl?
CardCollapsedOrientation (or similar I have found only a readonly property)
AutoWidth (I would like to set the cardwidth to occupy the whole grid width)
To change the orientation of collapsed cards, specify the CardLayout property. As for the AutoWidth, I am afraid there is no such property in the CardView. However, you can achieve this functionality using the CardStyle property. I have attached a sample project to illustrate this approach.