ToolStripDropDownItem.OnDropDownOpened(EventArgs) Method
Definition
Important
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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
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