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DateTimePicker.OnDropDown Method

Raises the DropDown event.

[Visual Basic]
Protected Overridable Sub OnDropDown( _
   ByVal eventargs As EventArgs _
protected virtual void OnDropDown(
 EventArgs eventargs
protected: virtual void OnDropDown(
 EventArgs* eventargs
protected function OnDropDown(
   eventargs : EventArgs


An EventArgs that contains the event data.


The DropDown event occurs when the drop-down calendar is shown.

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

The OnDropDown 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 OnDropDown in a derived class, be sure to call the base class's OnDropDown method so that registered delegates receive the event.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

DateTimePicker Class | DateTimePicker Members | System.Windows.Forms Namespace | DropDown