Paint.HomeScreen.btnDelete_TouchUpInside C# (CSharp) Méthode

partial         void btnDelete_TouchUpInside(MonoTouch.UIKit.UIButton sender)
        {
            if (this.fileListLength == 0)
            {
                return;
            }

            UIAlertView alert = new UIAlertView()
            {
                Title = LanguageStrings.DeleteAlertViewTitle,
                Message = LanguageStrings.DeleteAlertViewMessage,
                CancelButtonIndex = 0
            };

            alert.AddButton(LanguageStrings.CancelButtonText);
            alert.AddButton(LanguageStrings.OKButtonText);

            alert.Clicked += (s, e) =>
            {
                if (e.ButtonIndex == 1)
                {
                    this.InvokeCommandAndShowBusyIndicator(() =>
                    {
                        this.DeleteCurrentImageFromFileListAndUpdateDisplay();
                    });
                }
            };

            alert.Show();
        }