MainMenu.OnCollapse(EventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

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 -> unit

Protected Friend Overridable Sub OnCollapse (e As EventArgs)

Parameters

e: EventArgs

An EventArgs 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 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