private void btnView_Clicked(object sender, RoutedEventArgs e)
        {
            ViewAdditionalFileWindow viewAdditionalFileWindow = new ViewAdditionalFileWindow();

            viewAdditionalFileWindow.AdditionalFile = this.AssociatedFile;
            viewAdditionalFileWindow.ShowDialog(Window.GetWindow(this));
        }
 private void btnView_Clicked(object sender, RoutedEventArgs e)
 {
     ViewAdditionalFileWindow viewAdditionalFileWindow = new ViewAdditionalFileWindow();
     viewAdditionalFileWindow.AdditionalFile = this.AssociatedFile;
     viewAdditionalFileWindow.ShowDialog(Window.GetWindow(this));
 }