How to: Save Changes and Switch to Browse Mode by Clicking ENTER
End-users can discard the changes made or save them to a database by using the Cancel and Update commands. However, you can enable your end-users to perform these operations by clicking the Esc and ENTER keys, respectively. To implement this behavior, handle the editor's KeyDown client-side event.
If ENTER has been pressed, call the grid's ASPxClientCardView.UpdateEdit client-side method. This method saves all the changes made and switches the ASPxCardView to browse mode.
If Esc has been pressed, cancel all the changes made and switch the ASPxCardView to browse mode by calling the grid's ASPxClientCardView.CancelEdit client-side method.