MainMenu.OnCollapse(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 Collapse event.
protected public:
virtual void OnCollapse(EventArgs ^ e);protected internal virtual void OnCollapse (EventArgs e);abstract member OnCollapse : EventArgs -> unit
override this.OnCollapse : EventArgs -> unitProtected Friend Overridable Sub OnCollapse (e As EventArgs)Parameters
Remarks
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnCollapse 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 OnCollapse(EventArgs) in a derived class, be sure to call the base class' OnCollapse(EventArgs) method so that registered delegates receive the event.
Applies to
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.
