Semi.Avalonia/demo/Semi.Avalonia.Demo/Views/MainWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Controls.Notifications;

namespace Semi.Avalonia.Demo.Views;

public partial class MainWindow : Window
{
    private readonly WindowNotificationManager _manager;
    public MainWindow()
    {
        InitializeComponent();
        _manager = new WindowNotificationManager(this)
        {
            Position = NotificationPosition.TopLeft,
            MaxItems = 3
        };
    }
    
    internal void Notify(NotificationType t)
    {
        _manager.Show(new Notification(t.ToString(), "This is a notification message", t));
    }
}