System.Windows.Forms.ToolStripDropDown.OnOpening Method

Raises the ToolStripDropDown.Opening event.

Syntax

protected virtual void OnOpening (System.ComponentModel.CancelEventArgs e)

Parameters

e
A System.ComponentModel.CancelEventArgs that contains the event data.

Remarks

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The ToolStripDropDown.OnOpening(System.ComponentModel.CancelEventArgs) 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.

Requirements

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0