i'm trying to build a wpf custom control library, want to create some controls that inherited from wpf controls (textBox, label, ...) and i wanted them all to be inherted from a base class and wpf control, here is one of them:
public class MovableTextbox : TextBox, Movable public class Movable : Control
and it always shows error :
Severity Code Description Project File Line Suppression State
Error CS1721 Class 'MovableTextbox' cannot have multiple base classes: 'TextBox' and 'Movable'