oap_labs/AvaloniaApplication1/MainWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Interactivity;
using MsBox.Avalonia;
using MsBox.Avalonia.Enums;

namespace AvaloniaApplication1;

public class Phone
{
    public string Name { get; set; }
    public int Price { get; set; }
      
    public override string ToString()
    {
        return $"Смартфон {this.Name}; цена: {this.Price}";
    }
}