title: How to use SetColumnSpan?
body: <p>I am using the normal Grid, and adding Labels to from code, like tihs:</p>
  
  <pre><code>int a = 5;
  Label lb = new Label();
  lb.Content = a;
  
  Grid.SetColumn(lb,i);
  Grid.SetRow(lb, 1);
  MyGrid.Children.Add(lb);
  Grid.SetColumnSpan(lb,3);
  </code></pre>
  
  <p>The Label is added correctly to the Grid, but the columnspan is ineffective.Is it possible to do something like this?</p>