private async void showJanCodeMessage(string janCode, Button button, string colName)
        {
            MessageDialog dialog = new MessageDialog("このボタンのJANは: " + janCode, "メッセージ");

            dialog.Commands.Add(new UICommand("OK", cmd => { }, commandId: 0));
            dialog.Commands.Add(new UICommand("改修", cmd => {
                Frame root = Window.Current.Content as Frame;
                JanBindButton janBindButton = new JanBindButton(janCode, button, colName);
                root.Navigate(typeof(JanReset), janBindButton);
            }, commandId: 1));
            await dialog.ShowAsync();
        }
 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
     janBindButton         = (JanBindButton)e.Parameter;
     this.tbx_restJan.Text = janBindButton.getJanCode();
 }