NaturalGroundingPlayer.EditVideoWindow.menuDeleteVideo_Click C# (CSharp) Méthode

        private void menuDeleteVideo_Click(object sender, RoutedEventArgs e) {
            if (MessageBox.Show("Are you sure you want to delete this video file?" + Environment.NewLine + video.FileName, "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes) {
                try {
                    business.DeleteFile(video.FileName);
                    video.FileName = null;
                    video.Length = null;
                    video.Height = null;
                    bool IsSaved = SaveChanges();
                    // If adding new record and deleting the file and can't save, we must close form
                    // to avoid duplicate record if downloading another video file.
                    if (isNew && !IsSaved) {
                        video.MediaId = Guid.Empty;
                        isFormSaved = true;
                        this.Close(); // A non-loaded window can still be closed...
                    }
                } catch (Exception ex) {
                    string Msg = "The file cannot be deleted:\r\n" + ex.Message;
                    MessageBox.Show(Msg, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                }
            }
        }