AvaloniaFirstProject/AvaloniaApplicationTest/Models/ModelClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AvaloniaApplicationTest.Models
{
    internal class ModelClass
    {
        public static int count = 0;
        public static List<string> SurnameList = new List<string> { "Иванов", "Петров", "Сидоров" };
    }
}