ToolStripDropDownItem.OnDropDownOpened(EventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

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 -> unit

Protected Friend Overridable Sub OnDropDownOpened (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 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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