ToolStripDropDownItem.OnDropDownOpened(EventArgs) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Raises the DropDownOpened event.
protected public:
virtual void OnDropDownOpened(EventArgs ^ e);protected internal virtual void OnDropDownOpened (EventArgs e);abstract member OnDropDownOpened : EventArgs -> unit
override this.OnDropDownOpened : EventArgs -> unitProtected Friend Overridable Sub OnDropDownOpened (e As EventArgs)Parameters
Remarks
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnDropDownOpened 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 OnDropDownOpened(EventArgs) in a derived class, be sure to call the base class' OnDropDownOpened(EventArgs) method so that registered delegates receive the event.
Applies to
Werk met ons samen op GitHub
De bron voor deze inhoud vindt u op GitHub, waar u ook problemen en pull-aanvragen kunt maken en bekijken. Raadpleeg onze gids voor inzenders voor meer informatie.
