'宣言 Protected Overridable Sub OnActiveWorksheetChanged( _ ByVal e As SpreadsheetActiveWorksheetChangedEventArgs _ )
protected virtual void OnActiveWorksheetChanged( SpreadsheetActiveWorksheetChangedEventArgs e )
UltraSpreadsheet クラス UltraSpreadsheet メンバ SpreadsheetActiveWorksheetChangedEventArgs クラス ActiveWorksheetChanged イベント