ProgressBar в MVVM

using Avalonia.Controls;
using Avalonia.Interactivity;
using System;
using System.ComponentModel;
using System.Threading;
 
namespace Test_progress.Views
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
           // progress = this.Find<ProgressBar>("progressBar");
        }
 
       private void DoWork_button_click(object sender, RoutedEventArgs e)
        {
            BackgroundWorker worker = new BackgroundWorker();
            worker.RunWorkerCompleted += Worker_RunWorkerCompleted;
            worker.WorkerReportsProgress = true;
            worker.DoWork += Worker_DoWork;
            worker.ProgressChanged += Worker_ProgressChanged;
            worker.RunWorkerAsync();
 
        }
 
        private void Worker_ProgressChanged(object? sender, ProgressChangedEventArgs e)
        {
            progressBar.Value = e.ProgressPercentage;
            MyTextBlock.Text = (string)e.UserState;
        }
 
        private void Worker_DoWork(object? sender, DoWorkEventArgs e)
        {
            var worker = sender as BackgroundWorker;
            worker.ReportProgress(0, String.Format("Processing iteration 1"));
            for (int i=0; i<10; i++)
            {
                Thread.Sleep(1000);
                worker.ReportProgress((i+1)*10, String.Format("Processing iteration {0}", i+2));
            }
            worker.ReportProgress(100, "Done");
        }
 
        private void Worker_RunWorkerCompleted(object? sender, RunWorkerCompletedEventArgs e)
        {
            progressBar.Value = 0;
            MyTextBlock.Text = " ";
        }
    }
}

using Avalonia.Controls;
using Avalonia.Interactivity;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Threading;
 
namespace Test_progress.ViewModels
{
    public class MainWindowViewModel : ViewModelBase
    {
       
    }
}

FileManagerService service0 = new FileManagerService();
FileManagerService service1 = new FileManagerService();
FileManagerService service2 = new FileManagerService();

public static class TestStatic
{
    public static string Value { get; set; }
}

TestStatic.Value = "Hello world";

string result = TestStatic.Value; // >> Hello world

public class Test
{
    public string Value { get; set; }
}

public class FirstClass
{
    private readonly Test test = new Test();
}
 
public class SecondClass
{
    private readonly Test test = new Test();
}

public class Test
{
    public string Value { get; set; }
    private Test() {} // Закрытие конструктора
    public static Test Instance {get;} = new (); // Единственный экземпляр
}

public class Test
{
    public string Value { get; set; }
    
    public static Test Default {get;} = new (); // Дефолтный экземпляр
}

var service = new FileManagerService();
DependencyService.RegisterSingleton<FileManagerService>(service);

    public class MainWindowModel
    {
        private async Task StartProcess()
        {
            ProgressWindow window = new ProgressWindow("Заголовок окна")}
        Action action = () =>
        {
            window.update("Создание", 0);
            Thread.Sleep(3000);
            ....}
 
 
            await window.Start(action)
            window.Close();
            }

        public class FileManagerViewModel : ViewModelBase
        {
            private double _progress; public double Progress { get => _progress, set => this.raiseAndSetIfChanged(ref _progress, value)};
            private string _text; public string Text { get => _text, set => this.raiseAndSetIfChanged(ref _text, value)};
        }

    public partial class ProgressWindow
    {
        private Task;
        private CancellationTokenSource CancelTokenSource { get; set; } = new CancellationTokenSource();
 
        public void buttinCancel_click()
        {
            CancelTokenSource.Cancel();
        }
 
        public async Task<bool> Start(Action action)
        {
            this.Show();
            await Task.Run(action);
        }