# GH_UndoException class

Namespace: [Grasshopper.Kernel.Undo](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.kernel.undo.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
public class GH_UndoException : Exception
```

Exception associated with undo events

## Constructors

- [GH_UndoException](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.undo.gh-undoexception/ctor.md): (2 overloads)