OnBeforeDisplayMonthPopup メソッド (UltraMonthViewMulti)

Infragistics.Win.UltraWinSchedule.MonthViewMulti.UltraMonthPopupControl が表示される前に BeforeDisplayMonthPopup イベントを発生させます。

シンタックス

Visual Basic

'宣言
 
Protected Overrides Sub OnBeforeDisplayMonthPopup( _
   ByVal e As BeforeDisplayMonthPopupEventArgs _
) 

C#

protected override void OnBeforeDisplayMonthPopup( 
   BeforeDisplayMonthPopupEventArgs e
)

パラメータ

e

イベントのデータを提供する BeforeDisplayMonthPopupEventArgs。

解説

イベントが発生すると、デリゲートを通じてイベント ハンドラーが呼び出されます。

OnBeforeDisplayMonthPopup メソッドを使用すれば、デリゲートを関連付けなくても、派生クラスでイベントを処理できます。これは、派生クラスでイベントを処理する際によく用いられる手法です。

継承時の注意: 派生クラスで OnBeforeDisplayMonthPopup をオーバーライドする場合は、登録されたデリゲートがイベントを受信できるようにするため、必ず基本クラスの OnBeforeDisplayMonthPopup メソッドを呼び出してください。

使用例

Visual Basic

Private Sub ultraMonthViewMulti1_BeforeDisplayMonthPopup(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinSchedule.BeforeDisplayMonthPopupEventArgs) Handles ultraMonthViewMulti1.BeforeDisplayMonthPopup

    '	The BeforeDisplayMonthPopup event is a "cancelable" event,
    '	which means that the action to which it corresponds can be
    '	prevented from happening by canceling the event.
    '	
    '	Canceling an event is very simple - just set the 'Cancel'
    '	property of the event arguments to true. The action will then
    '	be prevented from happening, and the corresponding "After"
    '	event will not fire.

    '	If the month for which the popup is being displayed is
    '	not in the current year, we will cancel the event, effectively
    '	diallowing the displaying of the popup.
    If (e.Month.Year.YearNumber <> DateTime.Today.Year) Then
        e.Cancel = True
    End If

End Sub

C#

private void ultraMonthViewMulti1_BeforeDisplayMonthPopup(object sender, Infragistics.Win.UltraWinSchedule.BeforeDisplayMonthPopupEventArgs e)
{

	//	The BeforeDisplayMonthPopup event is a "cancelable" event,
	//	which means that the action to which it corresponds can be
	//	prevented from happening by canceling the event.
	//	
	//	Canceling an event is very simple - just set the 'Cancel'
	//	property of the event arguments to true. The action will then
	//	be prevented from happening, and the corresponding "After"
	//	event will not fire.

	//	If the month for which the popup is being displayed is
	//	not in the current year, we will cancel the event, effectively
	//	diallowing the displaying of the popup.
	if ( e.Month.Year.YearNumber != DateTime.Today.Year )
		e.Cancel = true;	
	
}