# UndoRedo class

Namespace: [Rhino.Render](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.render.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public static class UndoRedo
```

This class contains the event for UndoRedoChanged that is fired from RDK .

## Events

- [UndoRedoChanged](https://developer.rhino3d.com/api/rhinocommon/type/rhino.render.undoredo/undoredochanged.md): (static) Called after undo or redo has occurred for document settings.
- [UndoRedoEndedChanged](https://developer.rhino3d.com/api/rhinocommon/type/rhino.render.undoredo/undoredoendedchanged.md): (static) This event is raised when undo/redo ends in rdk.