End-users can resize cards by dragging a card separator. If cards are arranged in rows, dragging a separator changes the width of cards. If cards are arranged in columns, dragging a separator changes the height of cards.
The AllowCardResizing property indicates whether an end-user is allowed to change the width (or height) of cards. Cards can be resized if they have the same width (or height if they are arranged in columns), which is specified by the BaseColumn.FixedWidth property, and the AllowCardResizing option is enabled.
To obtain whether an end-user can resize cards, use the IsResizingEnabled property.
To learn more, see Card View.