C# MVVM Простий приклад

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace MVVM2.Models
{
  class MainViewModel : INotifyPropertyChanged // сповіщувач
  {
    public event PropertyChangedEventHandler PropertyChanged;

    public void OnPropertyChanged([CallerMemberName]string prop = "")
    {
      PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(prop));
    }

    private int _Clicks;

    public int Clicks
    {
      get { return _Clicks; }
      set
      {
        _Clicks = value;
        OnPropertyChanged();
      }
    }

    public MainViewModel()
    {
      Task.Factory.StartNew(() =>
      {
        while (true)
        {
          Task.Delay(1000).Wait();
          Clicks++;
        }
      });
    }
  }
}

---

 

public partial class MainWindow : Window
{
  public MainWindow()
  {
    InitializeComponent();
    DataContext = new MainViewModel();
  }
}

---

 

<Grid>
  <TextBlock FontSize="40" Text="{Binding Clicks}" />
</Grid>