For more information, see the UIElement.Drop event. Event handlers that are attached to these events are attached to the underlying DragDrop attached event and receive the same event data instance. The UIElement and ContentElement classes contain aliases for the DragDrop attached events so that the events appear in the class members list when a UIElement or ContentElement is inherited as a base element. The events and methods required for drag-and-drop operations are defined in the DragDrop class. In WPF, any UIElement or ContentElement can participate in drag-and-drop.
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Dragging-and-dropping between WPF applications and other Windows applications is also fully supported. Drag-and-drop supports manipulating objects within a single application, or between different applications. The drag-and-drop facilities provided by WPF are designed to be highly flexible and customizable to support a wide variety of drag-and-drop scenarios. For example, dragging a selection of files from one folder to another on the same storage device moves the files by default, whereas dragging files from a Universal Naming Convention (UNC) share to a local folder copies the files by default. The particular actions performed during a drag-and-drop operation are application specific, and often determined by context. For example, files, folders, and selections of content are some of the more common objects manipulated through drag-and-drop operations. The type and number of objects that can be manipulated with drag-and-drop is completely arbitrary.
The drag source and drop target may be UI elements in the same application or a different application. This topic provides an overview of drag-and-drop support in user interface (UI), and dropping them.ĭrag-and-drop operations typically involve two parties: a drag source from which the dragged object originates and a drop target which receives the dropped object.
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