title: How do I set a Silverlight Grid layout ColumnDefinition width to "*" programatically?
body: <p>So I'm creating columns dynamically for a Grid layout in Silverlight (V3.0, C#):</p>
  
  <pre><code>LayoutRoot.ColumnDefinitions.Add(new ColumnDefinition());
  </code></pre>
  
  <p>and you can specific that the width of the column be "auto" with</p>
  
  <pre><code>LayoutRoot.ColumnDefinitions.Add(new ColumnDefinition() { Width = GridLength.Auto });
  </code></pre>
  
  <p>But how to you set it to be "*" (share with with other columns)?</p>
  
  <p>I know you can set this in the XAML, but how do you do it in code?</p>