TreeView.OnItemDrag(ItemDragEventArgs) Method

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Raises the ItemDrag event.

protected:
 virtual void OnItemDrag(System::Windows::Forms::ItemDragEventArgs ^ e);

protected virtual void OnItemDrag (System.Windows.Forms.ItemDragEventArgs e);

abstract member OnItemDrag : System.Windows.Forms.ItemDragEventArgs -> unit
override this.OnItemDrag : System.Windows.Forms.ItemDragEventArgs -> unit

Protected Overridable Sub OnItemDrag (e As ItemDragEventArgs)

Parameters

e: ItemDragEventArgs

An ItemDragEventArgs that contains the event data.

Remarks

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnItemDrag method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding OnItemDrag(ItemDragEventArgs) in a derived class, be sure to call the base class's OnItemDrag(ItemDragEventArgs) method so that registered delegates receive the event.

Applies to