ToolStripMenuItem.OnDropDownShow(EventArgs) Method
Definition
Important
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Raised in response to the ShowDropDown() method.
protected:
override void OnDropDownShow(EventArgs ^ e);protected override void OnDropDownShow (EventArgs e);override this.OnDropDownShow : EventArgs -> unitProtected Overrides Sub OnDropDownShow (e As EventArgs)Parameters
Remarks
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnDropDownShow 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 OnDropDownShow(EventArgs) in a derived class, be sure to call the base class's OnDropDownShow(EventArgs) method so that registered delegates receive the event.
Applies to
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