# BeforeAddObjectEventArgs class

Namespace: [Grasshopper2.Doc](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.doc.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public class BeforeAddObjectEventArgs : EventArgs
```

Event arguments used for Object Added event.

## Constructors

- [BeforeAddObjectEventArgs](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.beforeaddobjecteventargs/ctor.md): Create a new BeforeAddObjectEventArgs instance.

## Properties

- [Cancelled](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.beforeaddobjecteventargs/cancelled.md): Gets whether the addition has been cancelled.
- [Document](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.beforeaddobjecteventargs/document.md): Gets the document to which this object is about to be added.
- [Object](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.beforeaddobjecteventargs/object.md): Gets the object about to be added.

## Methods

- [Cancel](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.beforeaddobjecteventargs/cancel.md): Call this method to abort the addition.