DragDrop.PreviewDragOver 附加事件
定義
在置放目標項目的界限內拖曳物件時持續發生。Occurs continuously while an object is dragged within the bounds of an element that is acting as a drop target.
see AddPreviewDragOverHandler, and RemovePreviewDragOverHandlersee AddPreviewDragOverHandler, and RemovePreviewDragOverHandlersee AddPreviewDragOverHandler, and RemovePreviewDragOverHandler備註
當拖曳的物件在做為卸載目標的元素範圍內時，會持續引發此事件。This event is raised continuously while a dragged object is within the bounds of an element that is acting as a drop target. 如果元素的屬性為，則不會引發這個事件 AllowDrop false 。This event is not raised if the element's AllowDrop property is false.
如需詳細資訊，請參閱 DragOver 事件。For more information, see the DragOver event.
路由事件資訊Routed Event Information
| 識別碼欄位Identifier field | PreviewDragOverEvent |
| 路由策略Routing strategy | 隧道Tunneling |
| 代理人Delegate | DragEventHandler |
對應的反升事件為 DragOver 。The corresponding bubbling event is DragOver.