Codebehind:

    public class model : ViewModelBase
      {
        
        private string name;
        public string Name
        {
          get { return name; }
          set
          {
            name = value;
            OnPropertyChanged("Name");
          }
        }
        private int id;
        public int Id
        {
          get { return id; }
          set
          {
            id = value;
            OnPropertyChanged("Id");
          }
        }
      
      }
    
      public class ViewModelBase : INotifyPropertyChanged
      {
        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string propertyName)
        {
          if (this.PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
      }
      public class MainWindowViewModel : ViewModelBase
      {
        
        private model model;
        public model Model
        {
          get { return model; }
          set
          {
            model=value;
            OnPropertyChanged("Model");
          }
        }
        public MainWindowViewModel()
        {
          Model = new model() { Id = 5, Name = "John" };
        }
      }