ToolStripMenuItem.OnDropDownShow(EventArgs) Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

ToolStripMenuItem.cs

Raised in response to the ShowDropDown() method.

protected:
 override void OnDropDownShow(EventArgs ^ e);

protected override void OnDropDownShow (EventArgs e);

override this.OnDropDownShow : EventArgs -> unit

Protected Overrides Sub OnDropDownShow (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 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.