Avalonia/AvaloniaApplication3/Views/MainWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Interactivity;

namespace AvaloniaApplication3.Views
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        private void NextImage(object source, RoutedEventArgs args)
        {
            Slides.Next();
        }
        private void PreviousImage(object source, RoutedEventArgs args)
        {
            Slides.Previous();
        }
    }
}