DateTimePicker.OnDropDown(EventArgs) Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Raises the DropDown event.

protected:
 virtual void OnDropDown(EventArgs ^ eventargs);

protected virtual void OnDropDown (EventArgs eventargs);

abstract member OnDropDown : EventArgs -> unit
override this.OnDropDown : EventArgs -> unit

Protected Overridable Sub OnDropDown (eventargs As EventArgs)

Parameters

eventargs

EventArgs

An EventArgs that contains the event data.

Remarks

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 Handling and Raising Events.

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

See also

• DropDown