title: How to remove an element inside a grid cell in xaml
body: <p>I have the following scenario (trying to implement a checker game):</p>
  
  <p>I have declared a grid with 8 rows and 8 columns. In some of them I paint a few ellipses programmatically in the following way:</p>
  
  <pre><code>this.myGrid.Children.Add(coin);
  </code></pre>
  
  <p>At this point all the ellipses are painted OK.
  The problem is that I can't figure out how to remove or put invisible a specific column. I have tried these lines of codes:</p>
  
  <pre><code>this.gridTablero.Children.RemoveAt(1);
  this.gridTablero.Children[1].Visibility = System.Windows.Visibility.Collapsed;
  </code></pre>
  
  <p>But those lines of code remove the rectangles of the Grid instead of the ellipse. I have try to see if I can access the ellipse inside the cell but not luck :-(</p>
  
  <p>If anyone know how to do this, any help would be very appreciate.</p>