title: Why aren't my rectangles showing?
body: <p>I don't understand why my rectangles are not being shown.
  I made the xaml, and data binded the canvas, and init properly.
  What am I missing such that it only shows a blank screen.
  It should show a digital figure 8. </p>
  
  <p>MODEL:</p>
  
  <pre><code>namespace Final
  {
      class Model : INotifyPropertyChanged
      {
          // define our property chage event handler, part of data binding
          public event PropertyChangedEventHandler PropertyChanged;
  
          // implements method for data binding to any and all properties
          private void OnPropertyChanged(string propertyName)
          {
              if (PropertyChanged != null)
              {
                  PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
              }
  
          }
  
          private double _topTopHorizontal;
          public double topTopHorizontal
          {
              get { return _topTopHorizontal; }
              set
              {
                  _topTopHorizontal = value;
                  OnPropertyChanged("topTopHorizontal");
              }
          }
  
          private double _leftTopHorizontal;
          public double leftTopHorizontal
          {
              get { return _leftTopHorizontal; }
              set
              {
                  _leftTopHorizontal = value;
                  OnPropertyChanged("leftTopHorizontal");
              }
          }
  
  
          public void initModel()
          {
              topTopHorizontal = 50;
              leftTopHorizontal = 50;
          }
  
  
  
  
  
  
  
  
      }
  }
  </code></pre>
  
  <p>Main</p>
  
  <pre><code>    public partial class MainWindow : Window
      {
          private Model model;
          public MainWindow()
          {
              InitializeComponent();
  
  
          }
  
          private void WindowLoaded(object sender, RoutedEventArgs e)
          {
              // create an instance of our Model
              model = new Model();
              model.initModel();
  
  
  
          }
  
  
  
  
  
  
      }
  }
  </code></pre>