# MultiDictionaryAddition enum

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

```cs
public enum MultiDictionaryAddition
```

Enumerates the possible types of addition for multidictionaries.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | No items were added. |
| AddedToNewKey | 1 | New items were added under a new key. |
| AddedToExistingKey | 2 | New items were added to an existing key. |