DropDownButtonOnContextMenuOpening - метод

protected override void OnContextMenuOpening(
	ContextMenuEventArgs e
)

Protected Overrides Sub OnContextMenuOpening ( 
	e As ContextMenuEventArgs
)

protected:
virtual void OnContextMenuOpening(
	ContextMenuEventArgs^ e
) override

abstract OnContextMenuOpening : 
        e : ContextMenuEventArgs -> unit 
override OnContextMenuOpening : 
        e : ContextMenuEventArgs -> unit