# canStartDrag

> Called when a drag operation wants to start in this collection view.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public event Func<CanStartDragArgs, bool> canStartDrag
```