# rootItem

> The hidden root item of the TreeView (it is never rendered).

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.IMGUI.Controls](/engine/6000.6/script-reference/unityeditor/imgui/controls.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
protected TreeViewItem<TIdentifier> rootItem { get; }
```

### Remarks

It has a depth of -1 whereas the rows of the TreeView will have a depth of 0 or higher. The rootItem can be used for traversing the items created in [TreeView\<TIdentifier>.BuildRoot()](/engine/6000.6/script-reference/unityeditor/imgui/controls/treeview1/buildroot.md) (if a full tree was created).