# TreeListControlBase.CustomNodeFilter event

Occurs when custom filtering is applied to nodes.

```csharp
public event EventHandler<TreeListCustomNodeFilterEventArgs>? CustomNodeFilter;
```

## See Also

* class [TreeListCustomNodeFilterEventArgs](../TreeListCustomNodeFilterEventArgs.md)
* class [TreeListControlBase](../TreeListControlBase.md)
* namespace [Eremex.AvaloniaUI.Controls.TreeList](../index.md)

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