namespace ConsoleApplication4
{
    using System.Windows.Forms;

    class Program
    {
        static void Main(string[] args)
        {
            Application.Run(new DemoView());
        }
    }
}

namespace ConsoleApplication4
{
    public interface IDemoView
    {
        void SetProgress(int val);
    }
}

namespace ConsoleApplication4
{
    public interface IDemoPresenter
    {
        void OnButtonClick();
    }
}

namespace ConsoleApplication4
{
    using System;

    public interface IDemoModel
    {
        void DoWork(Action<int> progressCallback);
    }
}

namespace ConsoleApplication4
{
    using System;
    using System.Windows.Forms;

    public partial class DemoView : Form, IDemoView
    {
        private IDemoPresenter _presenter;

        public DemoView()
        {
            _presenter = new DemoPresenter(this, new DemoModel());

            InitializeComponent();
        }

        public void SetProgress(int val)
        {
            Invoke(new EventHandler((s, e) => { progressBar1.Value = val; }));
        }

        private void button1_Click(object sender, EventArgs e)
        {
            _presenter.OnButtonClick();
        }
    }
}

namespace ConsoleApplication4
{
    public class DemoPresenter : IDemoPresenter
    {
        private IDemoView _view;
        private IDemoModel _model;

        public DemoPresenter(IDemoView view, IDemoModel model)
        {
            _view = view;
            _model = model;
        }

        public void OnButtonClick()
        {
            _model.DoWork(_view.SetProgress);
        }
    }
}

namespace ConsoleApplication4
{
    using System;
    using System.Linq;
    using System.Threading;

    public class DemoModel : IDemoModel
    {
        public void DoWork(Action<int> progressCallback)
        {
            new Thread(() =>
            {
                foreach (var el in Enumerable.Range(0, 101))
                {
                    progressCallback(el);
                    Thread.Sleep(100);
                }
            }).Start();
        }
    }
}